Hello jkingcrow21,
In order to the length test on your journal Ids, you can create a computed column (using our compute column function) and then make use of the
IF and
Len compute functions in tandem.
If(len(journal_ids)=10, true,false) would be the exact formula that you would use. Below is an example where I have performed the length test on Show Name.

I hope this helps.
Thank You,
Akshay