In the Alert version 3.6 it isn't possible to export in standard the variable list.
You need the use of the tools AlertCSVExport.exe (in c:\mmi\utilities) and follow these steps :
1. Select the xml file where your date are stored.
In case of the variable, it is the file taglist.xml (in c:\mmi\alert by default).
2. Create in a directory the result file that will contain the result of your export.
Sample : ResultExportTag.csv in c:\mmi\alert
Then you need to select this file
3. Select in the list the attributes that you want export.
4. Click on the button Run to do the export.