Originally Posted by qwertnard
I am trying to determine if it is a variable is null. Currently if I have a variable %car it will return "ford". However if it is empty the variable will return as a string %car. How do I turn that into a null value or have tasker recognize it should treat it as null.
That is by design. If you test for "not set", it will be TRUE when %car = %car and FALSE when %car = ford.
User-variables which have not had a value assigned do not have replacements carried out e.g. in the expression I love %fruit, if %fruit is uninitialized, the expression remains as it is, otherwise %fruit is replaced with the value.
Exception: uninitialized variables used in mathematical expressions are replaced with 0.