Try

AT('Name = "= M.',cString)

>Hi,
>
>I am looking for this chain:
>
> Name = "= M.
>
>I make:
>
> AT("Name = ' = M.",...
>
> But it does not find anything (the chain exists).
>
> Which is the correct form to look for that chain? How I look for the double comiles?
>
>
>Thanks