Can't see why exactly you'd need 50 when we're talking actual multipliers.
But... hey,
@Legend, maybe it'd be easier to make the Items field work just it does for Damage Multipliers? As in, you enter the value (default is 1), and everything other than 1 just MULTIPLIES the incoming value. For instance, you get 5 EXP Scrolls, while the cheat value is set to 3, so in the end you get 5x3=15 items.
Or, if multiplication is complicated to implement, then just replace the incoming value with override in the text field, like the old implementation works right now, The key concept is replacing slider with Editable Numeric Value Text field.
Also, please fix the crash, the game is completely unplayable in current state. Thanks a lot in advance.