Could you supply some more description, and ideally upload a sample .rp file, please?
It’s not clear what you mean by “Count if ^” … Just what are you trying to calculate?
The caret character, ^, IS a string char. Do you intend for it to be used as an operator, e.g., a power? If so, all calculations in Axure interaction code are contained within the double-square-brackets, e.g., [[LVAR1 ^ 2]] to calculate the variable, LVAR1 to the power of 2. You can learn more about math calculations in the Axure reference pages here:
https://www.axure.com/support/reference/math-functions-and-expressions
Or, do you intend to use it as some kind of delimiter within a string? You can use some common javascript string and math functions in Axure (again, all within the double-square-brackets.) Here is a list of variables and functions in RP7 and RP8:
https://forum.axure.com/t/v7-variables-list/24918