Well...nobody has an idea......not good....:(

I have added a second panel in the script that is not created by "pan_create".
code:
"
PANEL* Temp2_Pan =
{
pos_x = 100;
layer = 50;
bmap = IM_BUTTON_B1_ON; Button = 0,0,IM_BUTTON_B1_ON,IM_BUTTON_B1_OFF,IM_BUTTON_B1_OVER,setting,null,null; flags = visible;

}
"

Now both panels are working!!!