Alternative to eval()

In reverse order:

• it's not best practice to use unsupported functions. eval() is unsupported:

• AFAIK there is no alternative. 

That answers your specific questions. Taking a step back - what is the actual problem you're trying to solve here?

I want to use it as such: 

eval(
  "updatedictionary(
    fv!item,
    {
      "&ri!pkName&": null
    }
  )"
)

where ri!pkName is a cdt field which i want to address in updatedictionary()

a!update should get you there.

eval() is evil! It allows an attacker to inject code into your application. Think of a SQL injection attack.

a!update should get you there.

eval() is evil! It allows an attacker to inject code into your application. Think of a SQL injection attack.

Oh thanks, that was helpful.