problem with variable view

Hello,

I am debugging a piece of code in CVI2017; the code is a short function with local and global variables. I have a breakpoint in this function and once the debugger stops at the breakpoint I want to inspect some variable values.

View Variable View works as expected if the cursor is positioned over a local variable: the Variable and Call Stack window opens and the line with the selected variable is highlighted.

For some reason this does not work when I want to see the variable value that is defined in the same project but in a different file, i.e. as external.

Any suggestions what I should do to see all my variable values?

Thanks in advance!