set myVar to replaceText("abc.abc..abc", ".", space)
on replaceText(theText, fromDelim, toDelim)
set {TID, text item delimiters} to {text item delimiters, fromDelim}
set theText to text items of theText
set text item delimiters to toDelim
set theText to theText as Unicode text
set text item delimiters to TID
return theText
end replaceText