Merge command: [strcalendar-boxtitleh4 ]
Merge variable/item: strcalendarLinkBoxTitleH4

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

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