arrayFound = Entities.findEntities(MyAvatar.position, 5000.0)
for( i = 0; i < arrayFound.length; i++){
	var entProps = Entities.getEntityProperties(arrayFound[i]);
	if ((entProps.name.substring(0,3) == "jy_")||(entProps.name.substring(0,3) == "wb_")||(entProps.name.substring(0,3) == "ca_")){
		Entities.editEntity(arrayFound[i], {dynamic : true, gravity : {"x":0,"y":-9.8,"z":0}, velocity:{x:0, y:0.1, z:0}});
	} 
}