hi excel experts
I have a userform where a textbox is used to input the aplphabetic code name of a Raw material. The first two alphabets to be used in the textbox are 'R' & 'X' respectively. After typing in 'RX' the user can type in any other alphabets. My problem is how to force the user to type R & X first before entering other alphabets? Any clue friends...... Thanking you in advance
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