/*
    Should return 1 if the string contains ONLY numbers.
    Should return 0 if the string contains any NON-NUMERIC character.
*/
stock onlyNumbers( sParam[] )
{
    new
        iPos,
        iStrlen = strlen( sParam );

    while(iPos < iStrlen)
    {
        if(sParam[ iPos ] < 48 || sParam[ iPos ] > 57) return 0;
        ++iPos;
    }
    return 1;
}