Thank you so much for the response. Actually, what i would like to do is:
Having one patch on Multiamp with some block engaged plus Hx Effects in Multiamp's Loop, and having setup a preset in Hx (snapshot mode or pedal mode) that pressing one button on Hx effects can turn on/off one or more multiamp's bolcks while engaging a block or two in Hx effects. So i am guessing i cannot have multiple actions midi/audio involved in the same footswitch.
I will download the manual to check it out although i am total noob on this midi thing.
Also because i did not follow any news on the 2.9 update, meters will be available in Hx effects too?
thanks again!
Now i rembered that i have a Boss RV-500. Isn't it the same thing? I think it has midi capabilities, i need to try it...
No problem, happy to help.
I'm unfamiliar with the Multiamp, but as long as it has a MIDI command for toggling on/off, the HXFX can definitely send toggle commands from one Footswitch. I have a toggle programmed in a couple of my patches to turn my Source Audio C4 on/off. No sweat.
However:
The HXFX can only send one MIDI command per footswitch, and it can't combine MIDI commands and block control on the same footswitch... each footswitch can only do either MIDI OR HXFX block control. So to control multiple blocks in the Multiamp AND HXFX effects blocks, you'd need a combination of footswitches. One MIDI footswitch for each block you want to control in the Multiamp, and the remaining footswitches can control HXFX blocks. You can cheat the system a bit with the HXFX blocks though, as you CAN assign multiple HXFX blocks on one footswitch so you can turn multiple blocks on/off with one switch (Page 29 in the manual discusses assigning blocks to a switch... it's easy!).
You could totally incorporate your RV-500 into MIDI as well, and control both with your HXFX. The biggest thing to remember there is Midi Channels. Since the HXFX would be the controller in your particular setup, I would suggest having the Multiamp on MIDI Channel 1, and the RV-500 on MIDI Channel 2. I'm 99% certain both units have different MIDI commands, but some may overlap (i.e. A toggle command for the Multiamp may be the same command to switch patches on the RV-500), so having them on different channels will allow you to send MIDI to each separately. The Multiamp on Channel 1 will ignore commands for the RV-500 on Channel 2.
I know MIDI can be a lot to digest, I was in the same place when I took the plunge. Didn't know a thing about MIDI. But the things you can do with it are really cool, and the HXFX is pretty easy to work with. It just takes some time to wrap your head around the commands. It can be a fun rabbit hole to explore once you get it though... I started by just using my HXFX to control a single pedal, and now I'm controlling almost my entire pedalboard with just my iPad.
5sg.