client state error in web performance testing

hi,

I am facing a problem of Hidden fields. While i do web performance testing every controls generate a client state. some of them got the value from test context, but rest of them accept value from Hidden fields.

Ex :
<FormPostParameter Name="ctl00$ContentPlaceHolder_Content$OrderLineItemsRadGrid$ctl00$ctl03$c
tl00$OrderSubTotalRadNumericTextBox" Value="5.36" RecordedValue="5.36" CorrelationBinding="{{FormPostParam56.ctl00$ContentPlaceHolder_Content$Ord
erLineItemsRadGrid$ctl00$ctl03$ctl00$OrderSubTotalRadNumericTextBox}}" UrlEncode="True" />

<FormPostParameter Name="ctl00_ContentPlaceHolder_Content_OrderLineItemsRadGrid_ctl00_ctl03_c
tl00_OrderSubTotalRadNumericTextBox_ClientState" Value="{&quot;enabled&quot;:true,&quot;emptyMessage&quot;:
&quot;&quot;,&quot;minValue&quot;:0,&quot;maxValue&quot
;:999999999.99}" RecordedValue="" CorrelationBinding="" UrlEncode="True" />

here his xml format of web performance test.but in the following senerio client state is accepting it's value from Hidden Object

Ex:

<FormPostParameter Name="ctl00_ContentPlaceHolder_Content_OrderLineItemsRadGrid_ctl00_ctl03_c
tl00_OrderSubTotalRadNumericTextBox_ClientState" Value="{{$HIDDEN1.ctl00_ContentPlaceHolder_Content_OrderLineItemsRadGrid_c
tl00_ctl03_ctl00_OrderSubTotalRadNumericTextBox_ClientState}}" RecordedValue="" CorrelationBinding="" UrlEncode="True" />


so When i do web performance testing i m getting the following error:

Request failed: Context parameter '$HIDDEN1.ctl00_ContentPlaceHolder_Content_OrderLineItemsRadGrid_ctl00_ctl03_ct
l00_OrderSubTotalRadNumericTextBox_ClientState' not found in test context
So please help me out, How I can remove this error.

Thank u