Does anybody you has a macro which cnan change this formulacontaining
sum =SUM('1999'!A1:A2,'2000'!A1,'2001amended'!A1:B1)

into: =
:'1999'!A1+'1999'!A2+'2000'!A1+'2001amended'!A1+'2 001amended'!B1

reason being I like to use the summation icon instead of the + sign

Thanks