全局变量在循环外丢失值

I'm working on a script to extract data from BLOBs in a SQL database. The extraction process works great. I want to add some sort of progress indication to the script. I have a total record count from a SQL query, and an incremental counter that increases for each file exported. The incremental counter works, but the total record count - which I attempted to assign to a global variable - does not seem to hold its value. Am I declaring it incorrectly? I'm working on a script to extract data from BL