workflows function expression

[Victor Burgueño]

i have a webform that sends a new contact to corebos
inside the data of the contact i have put a variable that is the contact_no -> CONTACTO_XXX
from this fiel i wan to create a workflow that setup another field that is a contact related fiel that has
the first field contact_no

i had been trying without success a lot of time and i cant find the solution

this is the expression of the workflow that dont works now
cf_1236 -> is the related contact that i want to update
cf_1234 -> this is the CONTACT_XXX thas is allready filled

cf_1236 = $(cf_1234 : (Contacts) contact_no)