Coldfusion create array from dynamic form checkboxes

I have a dynamic form with multiple checkboxes and on submit I want to run a CFSTOREDPROC in another cfloop using only the checkbox values that changed status.

So far below is a rough concept that I am trying to test but I am sure the way I am creating my array will have issues. If anyone can provide feedback on possible solutions I would appreciate it.

HTML/CF FORM:

<form action="self.cfm" method="post" name="permissions">
 <input type="hidden" name="User_ID" value="<CFOUTPUT>#User_ID#</CFOUTPUT>">
<table>
<CFLOOP QUERY="getNthPermission">
<tr><td>#getNthPermission.Permission_Name#</td><td><input type="checkbox" value="#getNthPermission.Permission_ID#" name="#getNthPermission.Permission_Name#" <CFIF LISTVALUECOUNT(VARIABLES.UserPermission_ID_List,getNthPermission.Permission_ID) NEQ 0>CHECKED</CFIF>></td></tr>
</CFLOOP>
</table>
<input type="submit" name="submit" value="Update">
</form>

COLDFUSION ACTION:

<CFSET VARIABLES.Permission_ID_List = ValueList(getUserPermission.Permission_ID)>
    <cfset changed_permissions=ArrayNew()>
    <CFLOOP QUERY="getNthPermission">
    //If it was checked when the form was created but was unchecked by the user add it to my array.
    <CFIF LISTVALUECOUNT(VARIABLES.UserPermission_ID_List,getNthPermission.Permission_ID) NEQ 0  AND !IsDefined(FORM.#getNthPermission.Permission_Name#)>
    <cfset changed_permissions[getNthPermission.Permission_ID]>
    <CFELSEIF LISTVALUECOUNT(VARIABLES.UserPermission_ID_List,getNthPermission.Permission_ID) EQ 0  AND IsDefined(FORM.#getNthPermission.Permission_Name#)>
    //If it wasn't checked when the form was built but was checked by the user add it to my array.
    <cfset changed_permissions[getNthPermission.Permission_ID]>
    </CFIF>
    </CFLOOP>

//Now loop through the array that was just created and pass the stored procedure my values

<CFLOOP from="1" to="#arrayLen(changed_permissions)#" index="i">
    <CFSTOREDPROC DATASOURCE="#MYDB_DSN#" PROCEDURE="Update_UserPermission">
        <CFPROCPARAM DBVARNAME="@PermissionList" VALUE="#changed_permissions[i]#" TYPE="IN" CFSQLTYPE="cf_sql_longvarchar">
        <CFPROCPARAM DBVARNAME="@User_ID" VALUE="#FORM.User_ID#" CFSQLTYPE="cf_sql_integer">
    </CFSTOREDPROC>
</CFLOOP>