drawing glissando line with (gliss) as text across line

[Ryan Michael]

Hello, I am trying to engrave the following gesture: 

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bes16\glissando 

\tuplet 3/2{ aes8\glissando-\markup{\teeny"glissando between Ab and Bb"} \once \hide NoteHead a8\glissando  \once \hide NoteHead a16\glissando bes16~}

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my idea is to draw the first 16th note, have a visible line connect that 16th the the next 8th note with the word ("gliss") appear across the line like the first measure of this graphic: 

http://sites.siba.fi/documents/705861/705966/SingleGlissando1.png/3a9d5ef5-617d-460b-bfba-e3688ca67a4b?t=1371409410781

how can i do that?

currently, even using the /glissando command between the bes16 and the aes, lilypond does not draw a visible line. Should I increase the width of the bar so it is actually visible? 

Thanks!

Ryan.

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