problem with add_to_collection

[Altera_Forum]

https://www.alteraforum.com/forum/attachment.php?attachmentid=[ATTACH]4338 [/ATTACH]I try to create big collection that all have multicycles:mad:  

simple add_to_collection works set col_4_div [add_to_collection [get_fanouts $item1] $fanouts2]  but try to add another one in set col_4_div [add_to_collection $col_4_div $fanouts8]  or even set col_41_div [add_to_collection [add_to_collection [get_fanouts $item1] $fanouts2] $fanouts4]  generate error ********************************* Error: Missing required positional arguments: <collection_obj_2> --------------------------------------------------------------------------- Usage: add_to_collection [-h | -help] [-long_help] <collection_obj_1> <collection_obj_2>  -h | -help: Short help  -long_help: Long help with examples and possible return values  <collection_obj_1>: First object collection  <collection_obj_2>: Second object collection ---------------------------------------------------------------------------  while executing "add_to_collection [add_to_collection [get_fanouts $item1] $fanouts2] $fanouts4"  invoked from within "set col_41_div [add_to_collection [add_to_collection [get_fanouts $item1] $fanouts2] $fanouts4]"  (file "fpga620_rx_equ_top.sdc" line 42)