paged protocol values

Hello,

I am working on an external function for a battery system.

Basically, we have many "Slave BMS" on our network and I want to see the cell voltage that they all send me thought CAN Messages. The thing is that those information are sent thought a multiplex message. So, I've used your Paged Protocol feature to indicate which data contained what I wanted and it has worked really well.

Now I want to assign a parameter to the page value. like that when I use that external function, I can setup different BMS_ID depending on my setup. However, it seems to only accept number. Is it me that is not using the correct type of channels?

Thank you for your time,