IF loop forces template error

[Test71]

Hello,

I tried to define such IF loops in browse:
<%if $slang EQ "de"%>
blabla
<%else%>
blobli
<%/if%>

with $slang as my database filles language variable.

But if I ad this to the code the script will show only a blank page so I think it is the wrong code ?

Anyone here who worked with such IF loops ?

Regards
Frank