Returning a string RegEx to a client script

[frank121]

Hi all, 

I have a custom table I built where I want to store regular expressions so that i can call them in client script/business rule. I am storing them in a string field.
Email RegEx Example: /[a-zA-Z0-9_+&*-]+(?:\.[a-zA-Z0-9_+&*-]+)*@(?:[a-zA-Z0-9-]+\.)+[a-zA-Z]{2,7}/

I want to be able to use a client script/business rule to go into the table and grab the above RegEx and use it the following script:

 if ({call from script include}.test({randome field})) {
            //Do Something
        }
    

But the value I am returning back from the script include is not correct. I think its because when return the value from my custom table its typeof == String and i need it to be something else.If i just do the below code it will work fine:

var  reEmail = /[a-zA-Z0-9_+&*-]+(?:\.[a-zA-Z0-9_+&*-]+)*@(?:[a-zA-Z0-9-]+\.)+[a-zA-Z]{2,7}/;

if (reEmail.test(newValue)) {
            //Do Something
        }

What am I missing? When I return the value from the script include I am logging the correct RegEx but its of a string type which is what I am thinking is incorrect. how can i return just the regEx of /[a-zA-Z0-9_+&*-]+(?:\.[a-zA-Z0-9_+&*-]+)*@(?:[a-zA-Z0-9-]+\.)+[a-zA-Z]{2,7}/ without it being a string? Or if its something else, let me know. Thanks.

P.S: If you are wondering why im doing this its because if i ever want to go back and change the Regular Express I can easily go into the table and change it and i dont have to go into the script to do so. Any script changes need to go through Change which is a 2 week process and table changes dont need that.

[Nisar3]

I tried this in background script and it gave me error

var testValue = 'abc@gmail.com';
var gra = new GlideRecord('question_regex');
        if (gra.get('name', 'Email')) {
            var regex = new RegExp(gra.regex);
            gs.print(regex.test(testValue).toString());
        }

the error was

Script execution error: Script Identifier: null.null.script, Error Description: Invalid quantifier ?, Script ES Level: 0
Evaluator: com.glide.script.RhinoEcmaError: Invalid quantifier ?
   script : Line(4) column(0)
      1: var testValue = 'abc@gmail.com';
      2: var gra = new GlideRecord('question_regex');
      3:         if (gra.get('name', 'Email')) {
==>   4:             var regex = new RegExp(gra.regex);
      5:             gs.print(regex.test(testValue).toString());
      6:         }