Hi, Emmanuel.
Thanks for correcting my syntax. Even in this example, though, zero is always displayed as positive ("+0") unless and until the live.numbox is already at zero and you then manually type 0 into the object. On my computer (10.5.8; Max 5.1.4), only then does the zero lose the positive sign ("0").
Here is your example with some comments for reproducing this....
----------begin_max5_patcher----------
848.3oc0WssaaCCC84juBBCLfl0TCakKMYusui1h.EalDsJKEHImKsn+6SR1
N0o0NHasqs6kHKRZxCOjhx4wtcBlK2g5.3GvMPmNO1sSGuHmfNk66DjQ2kvo
ZuYAIxrLTXB5Wnyf6Ld4C5AZlHAgGPkDxx0FXNBl8qwTfBZLQJRACKCA5BCp
.yJD3rMXnHOyFQXKUCTtBoo6c5TXeH25vkdCoJkbKbOtWCaYbt0vsT6yoL8Z
NcObavkQ2FDVgINSXCWtvCrwkBsggI3nwmEwOKTlapjFUJcM0jrxF5YJLwTv
MClDGF0GHiibKwi7KSlFFA2U9RrTOMHm+qqhiqPxBovHnYnW0OULJutFM6Au
lXRXjS5Sc659o+arRP5AF0dHgyRtuj.0HjgZMcIB9BNrPIy.Ntv.FInXKWYB
KJbqQESanBCeeE8ZqKZ36syvCeeXXxXO0RFUigGSZggi9TY33BF11b63Wpsw
1Zkk3raXhW0YSAgTbkmcuXXu9N8BHBtPuRlySeQS7ITa016eYEHl34bxfhd7
qmbpJvzOjBPYS6qJ.GJ+GkwjFy331y3gjq8o5ThaY.IbjcyjlS3qqBYgqcC1
JbRPvAy+elKFLYzYyEi+pxECem3hgwmMWL5ylKVvk1DK37GAPZOwIEMAjhDu
XFrapPSI9fVSbKhn1glPvbpX4GDKTafakW2PUGBWM02De2eAYQSLVWLeYhjK
UkyKcrST33AiHSGV+o3ZD1IH4Q9kwSJtuqYRlzd2U+JhtVrT170dQzLTPmyw
5YkltASmQMFEadtAe9IcIoVxpNZimixEUhqjW281qlTlSysGYOSrgoYkHJpA
Cxjo1pYQ42MR90VPEBogZXRwrCAtoPYOLr7O.Yt.yDdX0XXsWyduyc5SgbYZ
qIFSrP1JVkpTT01alKXEcfAe6RaC0hlbfdMhobVVsB8w5M3ZuOFNsAs3t0RA
V7EDwgshAy9h5VStHqrpQF136mUxsW0hdl0+tw.9N5ZiYNxnpd931cP898Bi
7SOpVJGk38t+Cmdwe3weF0I+34KZYtJo53V4m..OeJME0Flv2RVyFxQ1rhkl
hh5e2UFKcsjILkP.tqwYcmKhF+kCQi9xgHxYfnAuADY27T2eCT78FaE
-----------end_max5_patcher-----------
As always, thanks, Emmanuel.
Dave Linnenbank