Identify the variable type used in the formula

Hi All,

Could you please help me to identify with below usages of a variable in fastformula,

The variables are initialized as below,

xx_work_state = 'x'

xx_work_city = 'x'

These variables are assigned with the employees work state and work city during the run time. But I could not identify how this variables are getting populated with those values.

As per the Doc ID 223280.1,

1. if you do not specify the variable type in the statement, Oracle FastFormula assumes it is numeric.

2. If the variable is not an input, Oracle FastFormula looks in the list of global values the first time the variable occurs. If the variable is in the list, Oracle FastFormula determines the data type from there.