Index: trunk/src_plugins/lib_formula/bisect.c
===================================================================
--- trunk/src_plugins/lib_formula/bisect.c	(revision 31766)
+++ trunk/src_plugins/lib_formula/bisect.c	(revision 31767)
@@ -54,8 +54,8 @@
 	const fgw_func_t *f;
 	fgw_error_t ferr;
 
-	RND_ACT_CONVARG(1, FGW_KEYWORD, formula_bisect, actname = argv[1].val.str);
-	RND_ACT_CONVARG(2, FGW_KEYWORD, formula_bisect, target = argv[2].val.nat_double);
+	RND_ACT_CONVARG(1, FGW_STRING, formula_bisect, actname = argv[1].val.str);
+	RND_ACT_CONVARG(2, FGW_DOUBLE, formula_bisect, target = argv[2].val.nat_double);
 	for(n = 3; n < argc; n++) {
 		if (((argv[n].type & FGW_STR) == FGW_STR) && (strchr(argv[n].val.str, ':') != NULL)) {
 			if (specn > 0) {
Index: trunk/src_plugins/lib_formula/impedance.c
===================================================================
--- trunk/src_plugins/lib_formula/impedance.c	(revision 31766)
+++ trunk/src_plugins/lib_formula/impedance.c	(revision 31767)
@@ -54,10 +54,10 @@
 	rnd_coord_t trace_width, trace_height, subst_height;
 	double dielectric;
 
-	RND_ACT_CONVARG(1, FGW_KEYWORD, impedance_microstrip, trace_width = fgw_coord(&argv[1]));
-	RND_ACT_CONVARG(2, FGW_KEYWORD, impedance_microstrip, trace_height = fgw_coord(&argv[2]));
-	RND_ACT_CONVARG(3, FGW_KEYWORD, impedance_microstrip, subst_height = fgw_coord(&argv[3]));
-	RND_ACT_CONVARG(4, FGW_KEYWORD, impedance_microstrip, dielectric = argv[4].val.nat_double);
+	RND_ACT_CONVARG(1, FGW_COORD, impedance_microstrip, trace_width = fgw_coord(&argv[1]));
+	RND_ACT_CONVARG(2, FGW_COORD, impedance_microstrip, trace_height = fgw_coord(&argv[2]));
+	RND_ACT_CONVARG(3, FGW_COORD, impedance_microstrip, subst_height = fgw_coord(&argv[3]));
+	RND_ACT_CONVARG(4, FGW_DOUBLE, impedance_microstrip, dielectric = argv[4].val.nat_double);
 
 	res->type = FGW_DOUBLE;
 	res->val.nat_double = pcb_impedance_microstrip(trace_width, trace_height, subst_height, dielectric);