Property "tect.citysfilter" Is Not Defined.

Yii 1.1 General Discussion
1

i added This extension for multiselect dropdown list.

i use http://www.yiiframew…multiselect.zip

<?php $this->widget(‘ext.multiselect.JMultiSelect’,array(

  'model'=&gt;&#036;model,


  'attribute'=&gt;'attribute',


 'data'=&gt;array('1'=&gt;'Colombo','2'=&gt;'mathara','3'=&gt;'galle'),


  // additional javascript options for the MultiSelect plugin


  'options'=&gt;array()

)); ?>

i have face this error

[color="#FF0000"]

Property "Tect.citysFilter" is not defined. [/color]

how solve this problem