MACROMEDIA COLFUSION MX 7-CFML Reference page 328

<cfif tempVar is not #StoreTempVar#
and tempVar is not "">
<h3>The value of tempVar has changed: the new value is
<cfoutput>#tempVar#</cfoutput></h3>
</cfif>
<p>
<form action = "cfparam.cfm" method = "post">
Type in a new value for tempVar, and hit submit:<br>
<input type = "Text" name = "tempVar">
<input type = "Submit" name = "" value = "submit">
</form>
328 Chapter 2: ColdFusion Tags