How to Replace Special Characters [ , ], " from a local variable result

Hi every one, 

I'm having a local variable that store data in a Json format then converted it into a type that Appian accepts:

a!fromJson(local!settings) 

and I get this as the result: 

Dictionary

• name"Type"(Text)
• value"["5"]"(Text)
• valueDisplay""(Text)
  

I want to get all the settings with value equals a particular ID, but it shows this error: Expression evaluation error at function 'wherecontains' [line 41]: Invalid types, can only act on data of the same type (Number (Integer), Any Type).

 index(local!settings, wherecontains(local!currentType.Id,local!settings),"value",null)

I guess the issue is because value is now containing special characters. 

Any one having a solution for this? 

Thanks a lot in advance for your helps!