Error in Google Geo Map

[#1]

Getting the error: Error in Expression: pow takes 2 parameters in my Google Maps Geo Scatter chart. I've built this same chart multiple times, but I have yet to see this error.

[JonnyPoole · Accepted solution]

it certainly does:

Looking at one of my own google charts, both LAT and LONG expressions use pow() function. Maybe the var_zoom variable isn't set ? 

=sum( round (256*pow(2,($(var_zoom)-1)))+( Long  *((256*pow(2,$(var_zoom)))/360)) )