DSK6713 Gel file doesnt work with inerrupts

Hello,

i have a little problem with my my program...

Using DSK6713, Win7, CSv5.5

This is my Code:

main.c

//Adaptnoise.c  Adaptive FIR filter for noise cancellation


#include "header.h"
#include "DSK6713_AIC23.h"




float NLMS_function();
//short output_func ();

Uint32 fs= DSK6713_AIC23_FREQ_8KHZ;

//Define
#define LEFT 0						//stereo
#define RIGHT 1						//stereo

int i=0;
int a=0;
int b=0;
int k=0;
float output=0;
int count1=0;
short x=0 ;
float Q=0;
short ModeNLMS=1;
//Data Transfer from/to Codec
union {Uint32 uint; short channel[2];} AIC23_output;
union {Uint32 uint; short channel[2];} AIC23_input;
//short x[3] = {0,0,0};
//short input;
#define m 100000

float e_LMS[m];
#pragma DATA_SECTION (e_LMS,".EXT_RAM")

interrupt void c_int11()	    //ISR
{

if (ModeNLMS == 2)
{
	bla bla bla bla......
}
	 return;					//return from ISR
}

main()
{



	 comm_intr();                       //init DSK, codec, McBSP





	 while(1)                          //infinite loop
	 {
	 }
}

my gel file:

menuitem "ModeChange"

slider ModeChange(1,2,1,1,modi)  /*incr by 1,from 1 up to 2*/
{
        ModeNLMS = modi;     /*vary type of output*/
}


---------------------------------

If I load the gel file and Run the program... 
I get this here...

ModeChange(2) cannot be evaluated.
Could not write 0x0001ED64: Execution state prevented access
at ModeNLMS=modi [Adaptnoise_2IN.gel:7]
at ModeChange(2)

If Im Changing the Options

Tools->Debugger Options -> Auto Run and Launch Options (TMS320C6713)

yes to -> Halt the target before any debugger access (will impact servicing of interrupts)

So its stay in while loop.... and my program dosen' t work, i Can change the slider to 1 and 2 ... no error dialog. But my interrupt doesn't work.

Is there a solution that the interrupts still work but also work the slide the slider without a error ?

thank you so much!

daniel