How to change the image of the actionbar

[RednibCoding]

I wanted to change the image of the actionbar (the one found in /fantasycode/images/menus/actionbar_trim.png).
Therefore, in my mod folder i created a images/menus/my_actionbar.png and a menus/actionbar.txt with the following content:

APPEND
# to engine/actionbar.txt
pos=0,0,640,35

bar_gfx=images/menus/my_actionbar.png

but the image does not show up, so no actionbar is drawn at all.

[RednibCoding]

Ok i figured out, that you have to name it exactly like the original one actionbar_trim.png and then you wont need an actionbar.txt at all for changing the image.