Problema con el script de las mana pots

19:12:30 :[Orator of Revelations: The day of judgment is near!
19:12:30 :[Preacher of Doom: All is lost! The prophecy of destruction has been fulfilled!
19:12:19 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[22] : Subproceso anulado. :
19:12:19 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[22] : Script Thread Crashed File: C:\Documents and Settings\Administrador\Escritorio\L2NET\IDE\Scripts\ManaPots.l2s
19:12:18 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : CANNOT PERFORM BOOLEAN EVALUATION ON TYPE OF ASSIGNABLE
19:12:18 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : invalid type: can't perform [(MPPOTS] [>] [ZERO)]
19:12:18 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : VARIABLE ZERO) IS UNDEFINED
19:12:18 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : VARIABLE (MPPOTS IS UNDEFINED
19:12:17 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : CANNOT PERFORM BOOLEAN EVALUATION ON TYPE OF ASSIGNABLE
19:12:17 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : invalid type: can't perform [(MPPOTS] [>] [ZERO)]
19:12:17 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : VARIABLE ZERO) IS UNDEFINED
19:12:17 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : VARIABLE (MPPOTS IS UNDEFINED
19:12:16 :[Leonidas: WTB MOIRAI HELM LIGTH/REC/OR PIECE !! PM ME
19:12:15 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : CANNOT PERFORM BOOLEAN EVALUATION ON TYPE OF ASSIGNABLE
19:12:15 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : invalid type: can't perform [(MPPOTS] [>] [ZERO)]
19:12:15 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : VARIABLE ZERO) IS UNDEFINED
19:12:15 :[ERROR: SCRIPT ERROR : THREAD[3] LINE[12] : VARIABLE (MPPOTS IS UNDEFINED

// Script by Escabuchen.
// Integer that allows us to check the amount of MP Pots
DEFINE_GLOBAL INT MPPOTS 0
DEFINE_GLOBAL INT MPLIMIT

PRINT_TEXT "Starting MP Pots script..."

// Starts looping...
DO
// Tells us how many MP Pots we have
ITEM_COUNT MPPOTS 728
// If you have less than 1 (if you have none) nothing will happen
IF (MPPOTS > ZERO)

// Calculates the amount of MP the percentage that we want represents
CALL GET_MP MPLIMIT
// If the MP we have is lower than the desired, it uses the mana pot
IF (CHAR_CUR_MP < MPLIMIT)
USE_ITEM 728 // Uses Mana Pot (728)
ENDIF
ENDIF
SLEEP 1500
/* Pauses the loop for 1,5 seconds (if the MP Pots have delay in your server you should modify this value to the amount of delay set on the server)
*/
LOOP ONE == ONE

END_SCRIPT

FUNCTION GET_MP 0
// Integer that determines the percentage of MP you need/want
DEFINE INT MPPERCENT 60
// Integers used for math operations
DEFINE INT TOTAL 100
DEFINE INT MPPARCIAL 0
DEFINE INT MPSTAT 0

MPPARCIAL = MPPERCENT * CHAR_MAX_MP
MPSTAT = MPPARCIAL / TOTAL

RETURN MPSTAT