Problem with variable in Apache Template

Virtualmin
1

If I add:

${IF-PARENT_WEB}
ScriptAlias /cgi-bin/ ${PARENT_HOME}/cgi-bin/
${ELSE-PARENT_WEB}
ScriptAlias /cgi-bin/ ${HOME}/cgi-bin/
${ENDIF-PARENT_WEB}

To my apache “Directives and settings for new websites”
It doesn’t replace any parent variable, so I get:

${IF-PARENT_WEB}
ScriptAlias /cgi-bin/ ${PARENT_HOME}/cgi-bin/
${ELSE-PARENT_WEB}
ScriptAlias /cgi-bin/ /home/mydomain/domains/mysubdomain/cgi-bin/
${ENDIF-PARENT_WEB}