How can a string variable called myString be converted to an all-capitals representation for future use?

With the use of Assign Activity by placing myString. ToUpper on the right side and myString on the left side.

Explanation:

String variables are commonly known as those variables that contain '0' and/or other characters like letters, symbols and numbers. These variables cannot contain mathematical functions such as subtraction and addition. The given operation can be executed with the use of Assign Activity by placing myString. ToUpper on the right-hand side and myString on the left-hand side.