tupletNumber placement

[Gagi Petrovic]

Dear Ponders, i can't find how to change the placement of the tupletNumber so that the text "sim." is placed under the "6" of my tuplet. See attachment.

When using 

\override TupletNumber #'X-offset = #10

the text stays on top of the number. Any other ways to tweak this? 

Thank you and all the best!

Gagi

fragment of code:

\times 4/6{c16-4 c-3 c-2 c^\markup\tiny"sim." c c}

tupletNumber.png
Description: PNG image