开云体育

I know how to replace (in loop) equal number of characters to the same number using FIND and SETSRING
Could You give an idea to how to replace 3 ?characters to 4.?
F.E.?
I need to replace \u0 with ;&#x when doing that with SETSTRING, the next character of the string becomes fourth from replacement.
Source ?\u0422?
After replacement ?;&#x22, ??
I lost "4"

?

Thanks