Thanks for quick response.
that Link does not work… but i found that at help – colliderbase has property “sleepingAllowed”… is this is the right property?
<td>sleepingAllowed : bool</td>
This property holds whether the body is allowed to get inactive for performance optimizations. The default value is the inverse of collisionTestingOnlyMode, so <tt>sleepingAllowed: !collisionTestingOnlyMode</tt>. This is needed to avoid sleeping when the collider gets used for collision detection, because if no forces or impulses are applied to the body it will sleep by default.
If collisionTestingOnlyMode is left at its default value (Which is false), this property has the default value <tt>true</tt>.