I'm trying to use a global variable named TOSBearTotal in an objective. The following seems to work for FreeformIvarstead03 (Grin and Bear it):
I tried but I keep getting an ellipses in brackets: [...]
How does one use global variables in an objective?

You need two more things. First you need to add your Global to the Global List of your Quest, right in the first Quest tab.

Then you need to use UpdateCurrentInstanceGlobal(TOSBearCount) in a Quest script for each TOSBearCount value change.