[Alex_Valde]

Try this:

pawn Code:

if(inputtext < 12 || inputtext > 120)

But you need to change something else too.
This is full code:

pawn Code:

new input[128];//You need to define the length of the input before formating it.
        format(input, sizeof(input), "%i", inputtext);
        if(inputtext < 12 || inputtext > 120)
        {