Case sloshing motion

Hi all,
I am currently simulating oscillating tank sloshing using Sphysics testcases (CaseSloshingMotion), but form total 15000 particles, 6000 particles moves out of simulation.
I changed the geometry of the tank and its motion definition. My new xml file is in the following. Help me find the source of this error.
King Regards
Soheil

<?xml version="1.0" encoding="UTF-8" ?>






















dp | bound



all





void




<_setmkbound mk="1" />
<_drawpoint x="0" y="0" z="0.06" />
























% Note alpha can depend on the resolution. A value of 0.01 is recommended for near irrotational flows.