The SET statement lets you assign a value to a variable. The value may be a constant in double quotes (even numeric values must be quoted) or the contents of another variable.
SET assigns the value to the internal memory in the variable which remembers the value read from the device. Assigning a value with set hence has the same effect as assigning it within a INPUT or READ statement. SET does not change the commanded value a variable receives from the user interface.
Example
SET tx.power = "33.2"