// change state queries initialization
changePositionQuery = new ChangePositionQuery(dis, dos, id);
changeColorQuery = new ChangeColorQuery(dis, dos, id);
changeTypeQuery = new ChangeStringQ(dis, dos,
Constants.CMD_SET_POI_VARIABLE, id, Constants.VAR_TYPE) {
/**
* After writing params, flushes the cache of
* {@link POI#changeTypeQuery}.
*/