Evaluates a function or JavaScript expression and returns the result
string uEvaluate(expression)
uEvaluate("3 + 5")
uEvaluate("parseFloat(IN.Salary) + 1500")
uEvaluate("function timesTwo(a){ return a*2; }")
uEvaluate("timesTwo(4)")
uEvaluate("timesTwo(IN.Salary)")
uEvaluate("if ("parseFloat(IN.Salary) > 2000") {2000;} else {("parseFloat(IN.Salary) + 500");}")