Merge command: [strsidekick-subtitleh4 ]
Merge variable/item: strSidekickSubTitleH4

Comments:
This wraps [strsidekick-subtitle ] in an h4. If [strsidekick-subtitle ] is empty no h4 is generated !

Formula:
@If(pageSidekickSubTitle="";"";"< h4 >"+pageSidekickSubTitle+"</ h4 >");