param_add – VDJScript verb
add the given value to the value of the calling slider/encoder/button add the value of the first parameter with the value of the second parameter. Both parameters can be actions instead of values: 'param_add `get_var a` `get_var b`'
Syntax
param_add
Parameters
The verb list does not record parameters for this verb.
Example
param_add `get_var a` `get_var b`