Say I have an expression in a parameter field of a set of (n) nodes and I need to set a value in that expression to an integer (e.g. a point number). It's fine if the value (point number) is just an integer from 0 to n-1.

Now, can I select all the nodes (in the network view) and insert some variable that represents the selected nodes, 0-n-1?

In c4d this was possible for any set of selected objects.

Anything similar here in Houdini?

Thanks,
Greg