Good day 
I’m struggeling with combinging a textstring together with an expression.
I’m trying to achinve an renaming of multiple CHOPs with a renameto parameter which consists of a string + op referenace to a value + string2 + [x-y]
How would my expression look like in the paramter window?
Where could I find a complete reference to which commands in parameter expressions are avalable?
I’ll appreciate any help 
There are a couple of tricks to this. The most important is to make sure that you’re put your parameter into python mode - the rename fields don’t swap over to python automatically. Next you’ll want to think of everything as a string that you’re joining together. Something like:
'string1_' + str(op( 'table1' )[0, 0].val) + '_string2_' + "[x-y]"
Take a look at this example and see if it makes sense:
base_python_renaming.tox (590 Bytes)