Flow-How to use a string variable in Condition Expression?

I have a dynamic logic string: 1 and (2 or 3)

and conditions:

1. Region equals Japan
2. Owner equals Jim
3. Owner equals Mary

Because the conditions and the logic string are dynamic, I'm using Power Automate to parse these conditions into a condition expression:

and(equals(Region,"Japan"),or(equals(Owner,Jim"),equals(Owner,"Mary")))

Then evaluate whether this condition expression is true or false, but when I reference this variable in a condition action, it always results to False, because it doesn't recognize the string as an expression.

I've also tried initializing a Boolean variable using the string, but same it returns the error:

The variable 'Reference Raw Logic Variable' of type 'Boolean' cannot be initialized or updated with value of type 'String'.

Other methods I've tried: (x as the string variable)

concat(@,x)
bool(x)

Is there a way I can use this string condition expression and evaluate if it is true/false?

Any help would be appreciated, thanks!