problem for using combo

Hi everyone

I have a problem during the using of dhtmlxcombo in my scheduler
this is the structure of my lightbox :

scheduler.config.lightbox.sections = [
	    { name:"patient", options:patients, map_to:"ag_patient", type:"combo", image_path: "./codebase/imgs/", filtering: true, focus:true},
		{ name:"description", height:50, map_to:"ag_detail", type:"textarea" },
		{ name:"time", height:72, type:"time", map_to:"auto"}
	   ];

my goal is to put my combo readonly, get the text an value of the option in my combo
when I want to perform a certain task like present the event.text as the text of my selectedText in my combo and send the value to my database.

Best regards
mbello