Can't filter multiple extjs grid columns

[Oxii]

To filter one grid column I use:

store.filter({      
    property: 'first_name',    
     anyMatch: true,     
    value   : this.getValue()  
    });

Now I need to search multiple fields at once, something like:

      var filters = [ 
   new Ext.util.Filter({  
  property: "first_name",
 anyMatch: true, 
value: this.getValue()  
  }),  
  new Ext.util.Filter({ 
  property: "last_name",
 anyMatch: true, 
value: this.getValue()  
 }) ];
  store.filter(filters);

The weird thing is that in both cases, only single search works


EDIT

Now I tried:

store.filter([{property: "first_name", anyMatch: true, value: this.getValue()},{property: "last_name", anyMatch: true, value: this.getValue()}]);

it worked but as an AND condition, like when user types 'ma' .. it retrieved the names but only those contains 'ma' in both first and last names. I need it to be OR. How can I do this ?

[mitchellsimoens]

Trying using filterBy and pass in a function where returning true will keep the record in the store, false will filter it out of the store.