How to set the value of the propertity width of the dataview

Discontinued products DHTMLX Touch
#1 
{
                   id:"mybox", 
		            rows:[
                        { 	
                            view:"toolbar", 
                            type:"MainBar",  
                            elements:[
                                { view:"button", label:"返回", id:"backButton",type:"round",width:100,click:"backGrid"},
                                {view:"label",id:"label", align:'center'}                                
                            ]
                        },
         
                        {
	                          view:"multiview", id:"multiview", 
	                          cells:[		  {	             
									 	view:"dataview",id:"project", 
										type:{
											template:"#prj_task_no#",
											height:95,
						                  width:100
										},			
										datatype:"json"  
										   },
                                                           {               view:"dataview",id:"order", 
										.......
										   }

]
                        }

I use the text below, they don’t work .
$$(‘mybox’).config.row[“multiview”].cells[“project”].width = wids;
or
$$(‘mybox’).config.row[“project”].width = wids;

How can I set the value of the propertity width of the dataview?

Any help would be appreciated! Please!

#2

The cells (“project” dataview is multiview cell) have the same size as multiview. It is impossible to set different width for a certain cell in the multiview.