Cannot move measure counters vertically

[liang seng]

Hi, I'm using Lilypond version 2.18.2 in Windows 10. Another problem I've encountered is, how to move measure counters vertically (in other words increase the gap between measure counters and the staff):

\version "2.18.2"

\layout { \context { \Staff

\consists #Measure_counter_engraver 

\override MeasureCounter.staff-padding = #10 }}

\score  { \relative c' { \startMeasureCount R1*2 \stopMeasureCount

\bar "|." } }

Neither the staff-padding or padding seems to work. What am I doing wrong?

Thank you.

Seng Liang.