Trying to create in Process Builder. When a Lead Time is selected from a picklist then The Contract_Date__c is populated with Order Received Date * Lead Time
So if you have a Contract Date of today and the lead time is 8 weeks then the out put would be today + 56 days.
[Opportunity].Order_Received_Date__c +
ISPICKVAL([Opportunity].Lead_Time__c,
"1", 7,
"2", 14,
"3", 21,
"4", 28,
"5", 35,
"6", 42,
"7", 49,
"8", 56,0)
I've tried CASE and ISPICKVAL but I keep receiving the below error
ERROR: The formula expression is invalid: Field Opportunity is a picklist field. Picklist fields are only supported in certain functions.
Thanks