Here is an example I found on
so I hope it helps. I was able to integrate it into my code and make it work.
<cfif isDefined("url.user_id")>
<cfoutput>
<p>The selected userid is: #url.user_id#</p>
</cfoutput>
</cfif>
<cfscript> myData = queryNew("id,name");
queryAddRow(myData);
querySetCell(myData, "id", "a001");
querySetCell(myData, "name", "John Doe");
queryAddRow(myData);
querySetCell(myData, "id", "a002");
querySetCell(myData, "name", "Jane Doe");
queryAddRow(myData);
querySetCell(myData, "id", "b001");
querySetCell(myData, "name", "Mike Smith");
queryAddRow(myData);
querySetCell(myData, "id", "c001");
querySetCell(myData, "name", "Bob Jones");
</cfscript>
<cfform format="Flash" width="500" height="400">
<cfgrid name="linkGrid" query="myData"
onchange="getUrl('index.cfm?user_id=' + linkGrid.dataProvider[linkGrid.selectedIndex]['id']);">
<cfgridColumn name="id" header="userid">
<cfgridColumn name="name" header="User Name">
</cfgrid>
</cfform>