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SetVariable
Last update:
May 18, 2026
Description
Sets a variable in the name parameter to the value of the value parameter. The SetVariable function is a dynamic evaluation function. Do not use untrusted code when using dynamic evaluation functions.
Returns
The new value of the variable.
Category
Function syntax
SetVariable(name, value) |
See also
Parameters
Parameter | Description |
name | Variable name |
value | A string, the name of a string, or a number |
Usage
You can use direct assignment statements in place of this function to set values of dynamically named variables. To do so, put the dynamically named variable in quotation marks and number signs (#); for example:
<cfset "#DynamicVar2#" = "Test Value2"> |
Also, the following lines are equivalent:
<cfset "myVar#i#" = myVal> SetVariable("myVar" & i, myVal) |
For more information, see Using Expressions and Number Signs in the Developing ColdFusion Applications.
Example
<h3>SetVariable Example</h3>
<cfif IsDefined("FORM.myVariable")>
<!--- strip out url, client., cgi., session., caller. --->
<!--- This example only lets you set form variables --->
<cfset myName = ReplaceList(FORM.myVariable,
"url,client,cgi,session,caller", "FORM,FORM,FORM,FORM,FORM")>
<cfset temp = SetVariable(myName, FORM.myValue)>
<cfset varName = myName>
<cfset varNameValue = Evaluate(myName)>
<cfoutput>
<p>Your variable, #varName#
<p>The value of #varName# is #varNameValue#
</cfoutput>
</cfif>
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