Keypad Problem LPC2148 on Oasis Spirit II

okk i have a serious problem with this SPirit Board. i m trying to Interface a Keypad which is included on the board, its a 4x4 keypad with a resistor array to which Vcc is connected. ok so here is the problem i m trying to check if any key is pressed but it dosnt wana coperate

this is my code

#include<lpc21xx.h>
#include<lcd.h>
#include<keypad.h>

typedef int int32;


                int32 value;
int main(void)
{
        PINSEL2=0x00000000;     //mode of operation
        PINSEL0=0x00000000;     //mode of operation

        IODIR0 |= 0x0000183C;

        make_out_lcd_port();

        lcd_init();
        clr_lcd_port();delay();


        lcd_cmd(0x00800000);
        delay();
        clr_lcd_port();

        lcd_data('G');
        delay();
        clr_lcd_port();


        IODIR0 |= 0x0000183C;

        while(1)
        {
        value=IOPIN0;
        delay();delay();delay();delay();
        value=value>>6;
        if(value==0xF)
                          {
                          lcd_cmd(0x00800000);delay();clr_lcd_port();
                          lcd_data('M');delay();clr_lcd_port();
                          }
        if(value!=0xf)
                        {
                        lcd_cmd(0x00800000);delay();clr_lcd_port();
                        lcd_data('X');delay();clr_lcd_port();
                        }
        }
return 0;
}

the LCD is working without any problem
ok what i wanna do here is
when no key is pressed show M and when a Key gets pressed show me X.
it says X all the time weather a key is pressed or not
:(

anyways
Keypad is connected from
Po.2 to P0.9
0.2 is RoW1
0.3 is RoW2
0.4 is RoW3
0.5 is RoW4
0.6 is CoL1
0.7 is CoL2
0.8 is CoL3
0.9 is CoL4

0.28 is RS of LCD
0.29 is EN of LCD

Any help will will appreciated :)