I just checked, its not like that in the original code. 

 <param name="input" type="select" size="300" label="Input Snapshot" area="True" help="Choosing Input Snapshot files" selected="false">
        <options from_file="coyote.loc">
            <column name="name" index="6"/>
            <column name="value" index="6"/>
             <filter type="param_value" ref="inputmodel" column="2"/>
             <filter type="param_value" ref="inputSize" column="3"/>
             <filter type="param_value" ref="inputRealization" column="4"/>
          </options>
      </param>

 
 
On Feb 21, 2014, at 1:50 PM, Vipin TS <vipin.ts@gmail.com> wrote:



             <filter type="param_value" ref="inputmodel" column="2”/>
             <filter type="param_value" ref="inputSize" column=“3"/>


If you closely look at the above line the double quotes are different for column field.

 
             <filter type="param_value" ref="inputRealization" column="4"/>
          </options>
      </param>

Did you figure out where the problem is? 

Thanks,
Saba


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