alternate endings without repeats

[Juraj]

Hello,

I want to write alternate endings without to have a repeat. Just two
versions of the last two bars, but the alternative not not as ossia above,
but beside in the same line with volta bracket.


I found the possibility:
\set Score.repeatCommands = #'((volta "1"))
\set Score.repeatCommands = #'((volta #f))
\set Score.repeatCommands = #'((volta "2"))
\set Score.repeatCommands = #'((volta #f))

But: instead of 1 and 2 i would like a text.
Tried 
\set Score.repeatCommands = #'((volta \markup {text}))
but this doesn't work.

Could anyone give me a hint?

Thank you

Juro