I'm trying to create a workflow that would make the target field value a negative number. I want to create related records as credits and debits and then be able to sum them up to get a net value.
I've tried to update the field to -1 and then multiply it accordingly, but I get an error stating that the value needs to be between 0 and 1,000,000,000,000. I've also just tried to multiply the value by a -1, but that doesn't work either. It just runs the workflow, but doesn't change the value.
I actually figured this one out. I created two different workflows to create records in one entity with different "Types". Then, on the account I had a rollup field to sum one type and then a rollup type to sum the other type. Then I used a calculated field to subtract one from the other.