issue regarding adding text markup

[chip]

I have a piece that contains a DC Al Coda. I have a measure that 
contains a single note and a double-bar where the 'To Coda' text is 
attached to the note and the coda sign. That is followed by a 
multi-measure rest of 30 measures, which has another double-bar and the 
text 'DC Al Coda' attached to it. The actual coda section begins. To 
seperate it from the previous measures I put in a skip bar. I attach the 
coda sign to the skip bar. Problem is adding the text 'DC Al Coda' to 
the multimeasure rest causes the multimeasure rest number to disappear, 
even with the text placed below the staff. This is probably a bit 
confusing, here is the code -

g''4. fsharp''8 r4 \break
\once \property Voice.TextScript \override #'extra-offset =#'( -2 . 1)
f''2.^\markup {To Coda} \mark \markup {\musicglyph #"scripts-coda"} \bar"||"
\once \property Voice.TextScript \override #'extra-offset =#'( -2 . -10)
\bar "||"
\once \property Voice.TextScript \override #'extra-offset =#'( 10 . 2)
s2. * 2^\markup {Coda} \bar "||"
\property Score.skipBars = ##t R2. * 28
\property Score.RehearsalMark \override #'extra-offset =#'( -18 . 1)
b'8[ d''] \mark \markup {\musicglyph #"scripts-coda"} c''[ e''] d''[ 
fsharp'']
e''4 r r8 g''
fsharp'' a'' b''4 r \bar "|." 


How do I attach more text without the number of measure disappearing?
Thanks,
--
Chip