How to change the data in extJS combo dropdown?

How to change the data in extJS combo dropdown ?

I have Combo box and I am trying to load the data. I want to sanatiize my data for some Reg expression.

Here is my Stroe code.

Ext.define("MyApp.store.combo.country", {
    extend: "Ext.data.Store",
    alias:"widget.country",
    //autoLoad:true,
     fields: [{
            name: 'name',type:'string'
        },{
            name: 'key',type:'int'
        }],
    proxy: {
        type: 'ajax',
        method: 'GET',
        url: '/myCountry/getName',
        reader: {
            type: 'json'                
        }
    },
    listeners: {
        beforeload ( store, operation, eOpts ) {
            console.log("combo before load");
        },

        load: function (_this, records, successful, operation, eOpts) {
            var length = records.length;
            var htmlRegex = new RegExp("<("[^"]*"|'[^']*'|[^'">])*>");
            for(var i=0; i<length; i++){
                if(htmlRegex.test(records[i].data.name)){
                    records[i].data.name = records[i].data.name.replace( /(<([^>]+)>)/ig, '');
                }
            }
        }
     }
});

Now when I click on COmbobox I can not see the data in the dropdown is sanatize (Executing without passing RegExp). For the second time this is working fine.

So my question is how can I alter my data in this situation.

What I ahve tried taht you can see in load method.(Even In before load method also nothing is happening.)

Any work around