[R] extending an existing ts object

[Bunny, lautloscrew.com]

Dear all,

somehow i am still stuck trying to add data to some existing ts data.  
If some new periodical becomes available, i´d like to add these data  
to my existing ts object respectively my database. I just want to add  
some new data at the end of my ts.
But how can I do this? Dont know why i just cant find how to do this  
simple operation...

i am really happy about any help !

thx in advance.