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Checks if a variable with that name exists.

Component Version macOS Windows Linux Server iOS SDK
FM Variables 4.0 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
MBS( "FM.VariableExists"; Name )   More


Parameter Description Example
Name The name of the variable. "x"


Returns 1 if variable exists, else 0.


Checks if a variable with that name exists.

See also

Example Databases

Blog Entries

This function checks for a paid license.

Created 18th August 2014, last changed 21st June 2017

FM.VariableClearAll - FM.VariableGet

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