Checks the range is valid for Integers; if not, a message box appears informing the user of the correct range.
Syntax
CSV_Misc_IntRange(LowerRange,UpperRange,OriginalValue,NewValue)
#LowerRange:
The Lower range of the necessary Range
#UpperRange:
The Upper range of the necessary Range
#Original Value:
The value to be change back too; this is used if the value is invalid or out of range.
#New Value:
The new value to change to.
Return Value
The new value, or the original value if out of range.