Using param_connect with vst~ object in Max for Live

Hi - I posted this on the discord beginners channel already but thought there was no harm also posting publicly in case someone else is having the same issues. Apologies if this is too basic.

So, just digging in to Max for Live 9 and trying to build some wrappers for my plugins. Was pretty happy to see the new param function which seemed like it was going to make everything easy and bidirectional. But it's not quite working out as expected from reading the documentation.

Connecting to vst~ parameters is fine, works in two clicks. And the live.dials etc. seems to correctly pull the specific plugin value, e.g. hz for osc pitch in Aalto and display on the control in the max device. But this doesn't carry over to the Push display which is still 0-1, not sure is this a Push limitation or do I need to patch it up manually, but not really a big deal. But more fundamentally bidirectional reading of parameter changes made in the plugin window doesn't seem to register at all - afaik from reading the documentation this should work and in my initial messing around it did work.

When I edit in Max I'm getting the error liveowner: doesn't understand "getparamvalue_typemanual" and the push control is resisting changes if that makes sense.

But when the max window is closed it works fine sending from push / the device to the plugin. Also having a lot of crashes in max when trying to edit these kinds of patches, there are some that work pretty much fine when loaded in live that crash Max when I try to open for editing.

Sorry for the tome, more than likely I'm doing dumb noob stuff to mess this all up so just wondering if there's anything here jumping out in terms of what I'm doing wrong.

(I'm on Mac, Max 9.05 and the latest Live beta - using both VSTs and AUs seems to get similar results)