I am working with an external panel provider and recieved a link set containing a pid and a psid from the survey company.
As complete link, I have to send a multiplication of the pid (this seems to be a security feature)
I've tried to make the calculation based on the help pages on PHP variables but nothing seems to work. I'm including a slightly adapted example of the formula below:
Formula for 'high' parameter value: (54321* PID) - 98765
Thanks for any helpful hints and this fantastic tool!.
P.S.: Some more details on what I've done so far:
Created the variables as post/get variables, following the instructions
added on the first page (consent page):
replace('%ppsid%', 'AD01_RV1', 'response'); // Platzhalter vorbereiten
replace('%ppid%', 'AD01_RV2', 'response'); // Platzhalter vorbereiten
inbetween tried different ways to calculate a new variable highid from ppid that have all led to errors visible to participants
added on the last page:
The PID value contains asterikses - but I don't think this is the problem since i already get errors in debug mode.