yes, set_label is calling SetLongName, SetUnit, SetComment, so only those or a user parameter row by name.
We will hookup something but for now, I am afraid you will need to use Labtalk. For example, assuming active worksheet with values in column A and you want to do A+1 in column B,
import originpro as op
wks = op.find_sheet()
wks.obj.LT_execute('col(B)[O]$=A+1')
Here obj is a backdoor to call lower level PyOrigin things.
CP