How to pass a token downstream to a value in a Pulldown?

Hi :)

I have setup a dashboard to allow users to optionally draw a trendline on a graph.

The user should be able to enter the number of days into the future for extending the trendline, but when I try to pass a token from the TextField module to a Pulldown module with a couple of staticOptions listed, the $daysFuture$ token does not get interpreted :(

Is there a workaround that we can use to pass a token downstream to a value in a Pulldown?

We are using Sideview Utils 2.3 and Splunk 5.0.1.

Example code below:

<module name="TextField" layoutPanel="panel_row2_col1">
              <param name="name">daysFuture</param>
              <param name="template">$value$</param>
              <param name="label">Trend Days:</param>
              <param name="width">20px</param>  
              <param name="float">left</param>
              <param name="default">30</param>

            <module name="Pulldown">
              <param name="name">calctrendLine</param>
              <param name="label">Calculate Trendline:</param>
              <param name="float">left</param>
              <param name="staticOptions">
                <list>
                  <param name="label">Off</param>
                  <param name="value"></param>
                </list>                          
                <list>
                  <param name="label">On</param>
                  <param name="value">| `lineartrend(_time, Total)` 
                                      | `lineartrendextend(_time, Total, $daysFuture$)`</param>
                </list>
              </param>

              <module name="Checkbox">                          
               <param name="name">drawtrendLine</param>
               <param name="label">Draw Trendline:</param>
               <param name="onValue">max(newY) as Linear_Trend</param>

Thanks in advance,

Luke :)