drifting

I have the following patch.I am trying to click on the left bang, open position 1 in the switch and pass message 11 at the same bang. I do not understand why I have to trigger the bang twice to achieve this.

The same thing happened, when I trigger the right bang. I have to trigger twice to pass the message 12.

            "box" :             {

                "maxclass" : "button",

                "numinlets" : 1,

                "patching_rect" : [ 540.0, 156.0, 20.0, 20.0 ],

                "numoutlets" : 1,

                "outlettype" : [ "bang" ],

                "id" : "obj-2"

                "patching_rect" : [ 466.0, 139.0, 20.0, 20.0 ],

                "id" : "obj-1"

                "maxclass" : "message",

                "text" : "12",

                "fontsize" : 12.0,

                "numinlets" : 2,

                "patching_rect" : [ 421.0, 342.0, 32.5, 18.0 ],

                "outlettype" : [ "" ],

                "id" : "obj-46",

                "fontname" : "Arial"

                "patching_rect" : [ 563.0, 239.0, 32.5, 18.0 ],

                "id" : "obj-38",

                "text" : "11",

                "patching_rect" : [ 497.0, 235.0, 32.5, 18.0 ],

                "id" : "obj-21",

                "text" : "2",

                "patching_rect" : [ 442.0, 219.0, 32.5, 18.0 ],

                "id" : "obj-79",

                "text" : "1",

                "patching_rect" : [ 401.0, 225.0, 32.5, 18.0 ],

                "id" : "obj-78",

                "maxclass" : "newobj",

                "text" : "switch 2",

                "numinlets" : 3,

                "patching_rect" : [ 443.0, 293.0, 54.0, 20.0 ],

                "id" : "obj-23",

            "patchline" :             {

                "source" : [ "obj-2", 0 ],

                "destination" : [ "obj-38", 0 ],

                "hidden" : 0,

                "midpoints" : [ ]

                "destination" : [ "obj-79", 0 ],

                "source" : [ "obj-1", 0 ],

                "destination" : [ "obj-21", 0 ],

                "destination" : [ "obj-78", 0 ],

                "source" : [ "obj-78", 0 ],

                "destination" : [ "obj-23", 0 ],

                "source" : [ "obj-79", 0 ],

                "source" : [ "obj-21", 0 ],

                "destination" : [ "obj-23", 1 ],

                "source" : [ "obj-38", 0 ],

                "destination" : [ "obj-23", 2 ],

                "source" : [ "obj-23", 0 ],

                "destination" : [ "obj-46", 1 ],

I have the following patch.I am trying to click on the left bang, open position 1 in the switch and pass message 11 at the same bang. I do not understand why I have to trigger the bang twice to achieve this.
The same thing happened, when I trigger the right bang. I have to trigger twice to pass the message 12.

{
	"boxes" : [ 		{
			"box" : 			{
				"maxclass" : "button",
				"numinlets" : 1,
				"patching_rect" : [ 540.0, 156.0, 20.0, 20.0 ],
				"numoutlets" : 1,
				"outlettype" : [ "bang" ],
				"id" : "obj-2"
			}

		}
, 		{
			"box" : 			{
				"maxclass" : "button",
				"numinlets" : 1,
				"patching_rect" : [ 466.0, 139.0, 20.0, 20.0 ],
				"numoutlets" : 1,
				"outlettype" : [ "bang" ],
				"id" : "obj-1"
			}

		}
, 		{
			"box" : 			{
				"maxclass" : "message",
				"text" : "12",
				"fontsize" : 12.0,
				"numinlets" : 2,
				"patching_rect" : [ 421.0, 342.0, 32.5, 18.0 ],
				"numoutlets" : 1,
				"outlettype" : [ "" ],
				"id" : "obj-46",
				"fontname" : "Arial"
			}

		}
, 		{
			"box" : 			{
				"maxclass" : "message",
				"text" : "12",
				"fontsize" : 12.0,
				"numinlets" : 2,
				"patching_rect" : [ 563.0, 239.0, 32.5, 18.0 ],
				"numoutlets" : 1,
				"outlettype" : [ "" ],
				"id" : "obj-38",
				"fontname" : "Arial"
			}

		}
, 		{
			"box" : 			{
				"maxclass" : "message",
				"text" : "11",
				"fontsize" : 12.0,
				"numinlets" : 2,
				"patching_rect" : [ 497.0, 235.0, 32.5, 18.0 ],
				"numoutlets" : 1,
				"outlettype" : [ "" ],
				"id" : "obj-21",
				"fontname" : "Arial"
			}

		}
, 		{
			"box" : 			{
				"maxclass" : "message",
				"text" : "2",
				"fontsize" : 12.0,
				"numinlets" : 2,
				"patching_rect" : [ 442.0, 219.0, 32.5, 18.0 ],
				"numoutlets" : 1,
				"outlettype" : [ "" ],
				"id" : "obj-79",
				"fontname" : "Arial"
			}

		}
, 		{
			"box" : 			{
				"maxclass" : "message",
				"text" : "1",
				"fontsize" : 12.0,
				"numinlets" : 2,
				"patching_rect" : [ 401.0, 225.0, 32.5, 18.0 ],
				"numoutlets" : 1,
				"outlettype" : [ "" ],
				"id" : "obj-78",
				"fontname" : "Arial"
			}

		}
, 		{
			"box" : 			{
				"maxclass" : "newobj",
				"text" : "switch 2",
				"fontsize" : 12.0,
				"numinlets" : 3,
				"patching_rect" : [ 443.0, 293.0, 54.0, 20.0 ],
				"numoutlets" : 1,
				"outlettype" : [ "" ],
				"id" : "obj-23",
				"fontname" : "Arial"
			}

		}
 ],
	"lines" : [ 		{
			"patchline" : 			{
				"source" : [ "obj-2", 0 ],
				"destination" : [ "obj-38", 0 ],
				"hidden" : 0,
				"midpoints" : [  ]
			}

		}
, 		{
			"patchline" : 			{
				"source" : [ "obj-2", 0 ],
				"destination" : [ "obj-79", 0 ],
				"hidden" : 0,
				"midpoints" : [  ]
			}

		}
, 		{
			"patchline" : 			{
				"source" : [ "obj-1", 0 ],
				"destination" : [ "obj-21", 0 ],
				"hidden" : 0,
				"midpoints" : [  ]
			}

		}
, 		{
			"patchline" : 			{
				"source" : [ "obj-1", 0 ],
				"destination" : [ "obj-78", 0 ],
				"hidden" : 0,
				"midpoints" : [  ]
			}

		}
, 		{
			"patchline" : 			{
				"source" : [ "obj-78", 0 ],
				"destination" : [ "obj-23", 0 ],
				"hidden" : 0,
				"midpoints" : [  ]
			}

		}
, 		{
			"patchline" : 			{
				"source" : [ "obj-79", 0 ],
				"destination" : [ "obj-23", 0 ],
				"hidden" : 0,
				"midpoints" : [  ]
			}

		}
, 		{
			"patchline" : 			{
				"source" : [ "obj-21", 0 ],
				"destination" : [ "obj-23", 1 ],
				"hidden" : 0,
				"midpoints" : [  ]
			}

		}
, 		{
			"patchline" : 			{
				"source" : [ "obj-38", 0 ],
				"destination" : [ "obj-23", 2 ],
				"hidden" : 0,
				"midpoints" : [  ]
			}

		}
, 		{
			"patchline" : 			{
				"source" : [ "obj-23", 0 ],
				"destination" : [ "obj-46", 1 ],
				"hidden" : 0,
				"midpoints" : [  ]
			}

switch-help

Always remember that Max evaluates objects from right to left. In your case that means when you're sending a bang to (1) and (11), the message (11) is sent to the switch before the message (1), since (11) is more to the right. This means that the right input of the switch will only be selected -after- you have already tried to send the message (11) through it. Likewise with the other pair.

So the solution is simple: Move the (11) to the left of (1) and move the (12) to the left of (2).

Any of the following will work as expected:

Thank you sooo much. That is the last straw I needed for my project to work. Very simple indeed :P

You also might want to have a look at the helpfile for trigger. it's a very handy object!!

and when you post patches use "Copy Compressed" from the edit menu...

[switch] help