Merge command: [strsidekick-subtitleh1 ]
Merge variable/item: strSidekickSubTitleH1

Comments:
This wraps [strsidekick-subtitle ] in an h1. If [strsidekick-subtitle ] is empty no h1 is generated !

Formula:
@If(pageSidekickSubTitle="";"";"< h1 >"+pageSidekickSubTitle+"</ h1 >");