How can I set the value of dataview width

Discontinued products DHTMLX Touch
#1

[code][code]
{
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",
                          cells:[{ 
				       view:"dataview",id:"order", 
									type:{
										template:"#co_nbr#",
										height:75,
					                    width:100
									},			
									datatype:"json"   
							      },
						          {									             
								  	view:"dataview",id:"project", 
									type:{
										template:"#prj_task_no#",
										height:95,
					                    width:100
									},			
									datatype:"json"   
									   }]
                    },
 ]

}

[/code][/code]

I use the " $$(‘mybox’).config.row[“project”].width = wids;" to set the value of the dataview width , it doesn’t work !
Please any help will be appreciated!