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The routine below is working while only selecting only the block "INSERT" but once a add the DXF code, see red bold below. any idea guys, i am totally lost. i am trying to select arrows with ScaleX -1 T.I.A. (defun C:[color=lime][u][i][b]YOUCOMMAND[/b][/i][/u][/color](/ aaaa bbbb cc cclist pt lay scfr scto) (defun FilterBlkNameX(bbbb valu) (setq aaaa 0 newSet(ssadd)) (while(< aaaa (sslength bbbb)) (setq cc(ssname bbbb aaaa)) (setq cclist(entget cc)) (if(= "INSERT" (cdr(assoc 0 cclist))) (progn (if(= (strcase valu)(strcase (cdr(assoc 2 cclist)))) (ssadd cc newSet) ) ) ) (setq aaaa(+ aaaa 1)) ) newSet ) (setvar "cmdecho" 0) (setq bbbb(ssget "X" (list(cons 0 "INSERT[color=black]")(cons 41 -1.0))))[/color] (if(and bbbb(> (sslength bbbb) 0))(setq bbbb(FilterBlkNameX bbbb "[u][i][b][color=lime]BLOCKNAME[/color][/b][/i][/u]"))) (if (and bbbb (> (sslength bbbb) 0)) [color=cyan] [b](progn[/b][/color] [b][color=cyan] (setq lay "0")[/color][/b] [b][color=cyan] (command "change" bbbb "" "Properties" "LAyer" lay "")[/color][/b] [b][color=cyan] (setq scfr(list 0.000000 0.000000 0.000000))[/color][/b] [b][color=cyan] (setq scto 0.500000)[/color][/b] [b][color=cyan] (command "SCALE" bbbb "" scfr scto)[/color][/b] [b][color=cyan] )[/color][/b] [b][color=cyan] )[/color][/b] (setvar "cmdecho" 1) (princ) ) (princ "\n [u][i][b][color=lime]YOURCOMMAND[/color][/b][/i][/u] to run the program.") (princ) routine updated for everyone