Mohan Pugaz

I know this is pretty old post, still posting my method here so it may help people in future.

Python has this function called exec(string) which executes given string as a python code.

So you can simply do these steps

1. create any node
   
2. gear icon > edit parameter interface > create a multine string parm > optionally set it to python language for syntax highlight
   
3. create a button > add a this in callback

   exec(hou.pwd().parm("your_string_parameter").eval())
   

It will get the string from multiline string parameter and runs it as python code.
obviously you can point this to parm from any node and run from that node.
this could be very handy when you want to store python codes in hip file itself. very much portable!

you can use an attribute (lets say `@twist_mask`) to control the twist, this attribute is a multiplier, so you can manipulate it as much you want such as re-mapping that using curveu attribute and use that mask to drive the twist.

Hi all, Ive read multiple forums regarding this but still not able to make it work.

Im trying to modify a custom `multiline string parm`
I want to change the language of it through python, say i have a dropdown to choose formatting whether python or vex.

here is what i did so far, I found the way to do this is using the .setTag() function to set {"editorlang : "python"}
i can see the tags are modified by printing my parmTemplateGroup but i couldnt see the change in the node.

Im not sure what im doing wrong, can someone help please?