Change Characters

I'm making an program to hold all my passwords.
Example: I have an word WATCH and I want to change every letter seperated. So letter CHR(W) gives an number + 10 gives another ASCII code how do I get the number back in to an ASCII character. And I need to get the next letters ATCH.
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Use the Ord & Chr functions.
Chr(65) -->  'A'
Ord('A') --> 65

for i := 1 to Length(MyString) do
    MyString[i] := Chr(Ord(MyString[i]) + 10);


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CyberChildAuthor Commented:
It looks easy if you see the code.

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