dock config

[Artyom Mirgorodsky]

Why I can not write config for align dock on the left side of window contorol 
buttons like this:

<dock>
  <position>RightTop</position>
  <stacking>Top</stacking>
  <direction>Horizontal</direction>
  <floatingX>-56</floatingX>
  <floatingY>0</floatingY>
  <autoHide>no</autoHide>
  <hideDelay>300</hideDelay>
  <moveButton>A-Left</moveButton>
  <noStrut>yes</noStrut>
</dock>