Heres the scenerio. Im making a Listbox for user input. The input range is 0-9999 and everything works according to plan with this until the next step.
Im placing an if-then-else-end statement in to check that no other characters/letters are used, for the listbox to be wiped clean and a message to the user that they inputted illegal data, but im getting 'attempt to compare number with nil' error.
Is there anything i can do to either allow the lua to ignore the error and carryon with the if-then-else-end statement or allow it to not do an error at all?
heres the code i have at the moment-
ImageAmountInput:SetWantsKeyEvents( true );
ImageAmountInput.KeyDown = function( sender, args )
if args.Action == 162 then
ImageAmountInput:SetSelection( 1, 4 );
IAI = ImageAmountInput:GetText();
IAI = tonumber( IAI );
if IAI >= 0 and IAI <= 9999 then -- ERROR produced here if non-numerical characters are used in user input box.
ImageAmountInput:SetSelection( 0, 0 );
ImageAmountInput:SetText( "" );
print ( "You entered an illegal entry" );