Urgent help in verilog code for cyclone 4 e

This is the code which I have written to check whether lcd displayes anything. tell me if I have made a mistake anywhere.

Diplaying Characters To The LCD via FPGA

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..

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-------------------Write 'P'-------------------

when S9 =>

current_state <= S10;

LCD_DATA <= x"50";

LCD_ENABLE <= '1';

LCD_RW <= '0';

LCD_RS <= '1';

when S10 =>

current_state <= S11;

LCD_DATA <= x"50";

LCD_ENABLE <= '0';

LCD_RW <= '0';

LCD_RS <= '1';

-------------------WRITE 'Y'-------------------

when S11 =>

current_state <= S12;

LCD_DATA <= X"59";

LCD_ENABLE <= '1';

LCD_RW <= '0';

LCD_RS <= '1';

when S12 =>

current_state <= S13;

LCD_DATA <= X"59";

LCD_ENABLE <= '0';

LCD_RW <= '0';

LCD_RS <= '1';

-------------------WRITE 'R'-------------------

when S13 =>

current_state <= S14;

LCD_DATA <= X"52";

LCD_ENABLE <= '1';

LCD_RW <= '0';

LCD_RS <= '1';

when S14 =>

current_state <= S15;

LCD_DATA <= X"52";

LCD_ENABLE <= '0';

LCD_RW <= '0';

LCD_RS <= '1';

...

..

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