Error when change subscriber in subscription

I add in FC for Subscription in Calculation tab next line:

Add: status in $file="Active"

Update: not same(status in $file0, status in $file) and status in $file="Active"

Calculation: $CanSave=nullsub(jscall("MOSLicenseControl.ChLicAmount", serviceName in $file), true)

 

Now when i change subscriber in Subscription table i get error (see attach). What is wrong ?