How to set values in button field of jquery multi select plug in using asp.net,jquery and MVC

Setting the Values in array and also in multi-select drop down check box

 var valArr1="Hindi,Tamil";
 var arr1 = valArr1.split(',');
 for (var i = 0; i < valArr1.length; i++) 
 {
     //The below code is used to set values in check box 
     $(".ms-options").multiselect("widget").find(":checkbox[value='" + arr1[i] + "']").attr("checked", "checked");
 }

I have no option, how to set values (var valArr1="Hindi,Tamil" ) in button field

<div class="ms-options-wrap" style="position: relative;">
<button>[object Object]</button>

The below line shows value object object in Button field

<div class="ms-options-wrap" style="position: relative;">
 <button>[object Object]</button>
 <div class="ms-options" style="min-height: 200px; overflow: auto; display: block; max-height: 200px;">
<ul style="column-count: 1; column-gap: 0px;">
<li>
    <label for="ms-opt-27" style="padding-left: 21px;">
     <input type="checkbox" value="Hindi" title="Hindi" id="ms-opt-27" checked="checked">
        Hindi
    </label>
</li>
<li>
    <label for="ms-opt-28" style="padding-left: 21px;">
     <input type="checkbox" value="Tamil" title="Tamil" id="ms-opt-28" checked="checked">
        Tamil
    </label>
</li>
<ul>
 </div>     

I need solution please help me on this.