Export of sexp using org-caldav-sync

[Joa Ljungvall]

Dear all,

is there a way to make org-caldav-sync export sexp expression in the org files? 
The manual states that simple expressions might work (does not seem to the 
case), but I also have a few more complicated functions of my own like

* Something
<%%(diary-float t 2 1)>

* Something else
<%%(every-even-tuesday)>




org version
9.3.6

emacs version
26.1



best regards


Joa