[RESOLVED] Asc(65)

[helpjaypls]

I have a string that i am cutting up.
the string is looped through looking at each character (MyStr)

If MyStr = Asc(65) Or Asc(66) Or Asc(67) Or Asc(68) Or Asc(69) Or
 Asc(70) Or Asc(71) Or Asc(72) Or Asc(73) Or Asc(74) Or Asc(75) Or Asc(76)
 Or Asc(77) Or Asc(78) Or Asc(79) Or Asc(80) Or Asc(81) Or Asc(82) Or 
Asc(83) Or Asc(84) Or Asc(85) Or Asc(86) Or Asc(87) Or Asc(88) Or Asc(89) 
Or Asc(90) Or Asc(97) Or Asc(98) Or Asc(99) Or Asc(100) Or Asc(101) Or 
Asc(102) Or Asc(103) Or Asc(104) Or Asc(105) Or Asc(106) Or Asc(107) Or 
Asc(108) Or Asc(109) Or Asc(110) Or Asc(111) Or Asc(112) Or Asc(113) Or 
Asc(114) Or Asc(115) Or Asc(116) Or Asc(117) Or Asc(118) Or Asc(119) Or 
Asc(120) Or Asc(121) Or Asc(122) Then

the above code lists the ascii numbers for A-Z & a-z only! So it should only execute if the character in MyStr is A-Z or a-z but when the character in MyStr is space, or tab it is still processed!!
can anyone tell me why?