Index: trunk/src_plugins/renumber/renumber.c
===================================================================
--- trunk/src_plugins/renumber/renumber.c	(revision 17868)
+++ trunk/src_plugins/renumber/renumber.c	(revision 17869)
@@ -365,6 +365,8 @@
 	return 0;
 }
 
+extern const char pcb_acts_RenumberBlock[];
+extern const char pcb_acth_RenumberBlock[];
 fgw_error_t pcb_act_RenumberBlock(fgw_arg_t *ores, int oargc, fgw_arg_t *oargv);
 fgw_error_t pcb_act_RenumberBuffer(fgw_arg_t *ores, int oargc, fgw_arg_t *oargv);
 
@@ -373,7 +375,7 @@
 
 pcb_action_t renumber_action_list[] = {
 	{"Renumber", pcb_act_Renumber, pcb_acth_Renumber, pcb_acts_Renumber},
-	{"RenumberBlock", pcb_act_RenumberBlock, NULL, NULL},
+	{"RenumberBlock", pcb_act_RenumberBlock, pcb_acth_RenumberBlock, pcb_acts_RenumberBlock},
 	{"RenumberBuffer", pcb_act_RenumberBuffer, NULL, NULL}
 };
 
Index: trunk/src_plugins/renumber/renumberblock.c
===================================================================
--- trunk/src_plugins/renumber/renumberblock.c	(revision 17868)
+++ trunk/src_plugins/renumber/renumberblock.c	(revision 17869)
@@ -34,20 +34,17 @@
 #include "change.h"
 #include "conf_core.h"
 
-fgw_error_t pcb_act_RenumberBlock(fgw_arg_t *ores, int oargc, fgw_arg_t *oargv)
+const char pcb_acts_RenumberBlock[] = "RenumberBlock(old_base,new_base)\n";
+const char pcb_acth_RenumberBlock[] = "TODO";
+
+fgw_error_t pcb_act_RenumberBlock(fgw_arg_t *res, int argc, fgw_arg_t *argv)
 {
-	PCB_OLD_ACT_BEGIN;
 	char num_buf[15];
 	int old_base, new_base;
 
-	if (argc < 2) {
-		pcb_message(PCB_MSG_ERROR, "Usage: RenumberBlock oldnum newnum");
-		return 1;
-	}
+	PCB_ACT_CONVARG(1, FGW_INT, RenumberBlock, old_base = argv[1].val.nat_int);
+	PCB_ACT_CONVARG(2, FGW_INT, RenumberBlock, new_base = argv[2].val.nat_int);
 
-	old_base = atoi(argv[0]);
-	new_base = atoi(argv[1]);
-
 	conf_set_editor(name_on_pcb, 1);
 
 	PCB_SUBC_LOOP(PCB->Data);
@@ -77,8 +74,8 @@
 	}
 	PCB_END_LOOP;
 	pcb_undo_inc_serial();
+	PCB_ACT_IRES(0);
 	return 0;
-	PCB_OLD_ACT_END;
 }
 
 fgw_error_t pcb_act_RenumberBuffer(fgw_arg_t *ores, int oargc, fgw_arg_t *oargv)