<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def set_transform(self, name, transform):
 """ Set the transform for one of the manager's objects. This replaces the prior transform. Parameters name : str An identifier for the object already in the manager transform : (4,4) float A new homogenous transform matrix for the object """

        if name in self._objs:
            o = self._objs[name]['obj']
            o.setRotation(transform[:3, :3])
            o.setTranslation(transform[:3, 3])
            self._manager.update(o)
        else:
            raise ValueError('{} not in collision manager!'.format(name))