(child list			)	VinL:			{                                                     
									 quantity,	if toggle: then length(parts_list:) else length(parts_list:);
									 demandorder,	{AK_plan:,LinAK:};                               
									 class,		main_pos,                               
									 part_name,	nth(child:index:,parts_list:);          
									 frame_main,	nth(7,nth(child:index:,dialog_control:));
									 conveyor_type,	nth(2,nth(child:index:,dialog_control:));
									                                                         
									 tsl_list,	nth(1,nth(child:index:,input_list:));						
									 xtn_list,	nth(2,nth(child:index:,input_list:));							
									 fm_list,	nth(3,nth(child:index:,input_list:));   
									 tst_list,	nth(4,nth(child:index:,input_list:));   
									 xaf_list,	nth(5,nth(child:index:,input_list:));   
									 xsw_list,	nth(6,nth(child:index:,input_list:));   
									 tsls_list,	nth(7,nth(child:index:,input_list:));   
									                                                         
								}; 
								
runs the following:

#(list				)		demandorder:		{L_pos:};
#(list				)		demandvalue:		{savevalue:};

(frame 				)		frame_null:		framexy(point(0,0,0),vector(1,0,0),vector(0,1,0));

(list parameter			)		conveyor_list:		{main_ass_tsl,main_ass_xtn,main_ass_fm,
									 main_ass_tst,main_ass_xaf,main_ass_xsw,main_ass_tsls};
(string	parameter modifiable	)		part_name:		;
(list parameter modifiable	)		tsl_list:		;
(list parameter modifiable	)		xtn_list:		;
(list parameter modifiable	)		fm_list:		;
(list parameter modifiable	)		tst_list:		;
(list parameter modifiable	)		xaf_list:		;
(list parameter modifiable	)		xsw_list:		;
(list parameter modifiable	)		tsls_list:		;
(integer parameter modifiable	)		conveyor_type:		;
(frame parameter modifiable	)		frame_main:		;

#+
(list				)		savevalue:		{part_name,conveyor_type,
									tsl_list,xtn_list,fm_list,tst_list,xaf_list,
									xsw_list,tsls_list,frame_main, frame_null};
#-


#----------------------------------------------------------------------------------------------------

(child	) 		L_pos: 	{ 
				
				class,			ug_child_in_part,
				#demandvalue,		{tsl_list:,xtn_list:,fm_list:,tst_list:,xaf_list:,xsw_list:,tsls_list:,conveyor_type:,frame_main:};
				Target_File_Name,	part_name:,
				Parameters,		{ 
							class,		if conveyor_type:=1 then main_ass_tsl
									else 	if conveyor_type:=2 then main_ass_xtn
										else 	if conveyor_type:=3 then main_ass_fm
											else 	if conveyor_type:=4 then main_ass_tst
												else 	if conveyor_type:=5 then main_ass_xaf
													else 	if conveyor_type:=6 then main_ass_xsw
														else main_ass_tsls;
							ReferenceFrame,	frame_main:;
							frame_map,	frame_null:;
							
							tsl_list,	tsl_list:;
							xtn_list,	xtn_list:;
							fm_list,	fm_list:;
							tst_list,	tst_list:;
							xaf_list,	xaf_list:;
																		
							xsw_list,	xsw_list:;
																
							tsls_list,	tsls_list:;
							
							};
				};
				
the classes main_ass_*** include several calculations and children with ug_component,
those classes work fine