Index: trunk/src_plugins/export_openems/excitation.c
===================================================================
--- trunk/src_plugins/export_openems/excitation.c	(revision 24605)
+++ trunk/src_plugins/export_openems/excitation.c	(revision 24606)
@@ -108,6 +108,8 @@
 	}
 }
 
+static void exc_val_chg_cb(void *hid_ctx, void *caller_data, pcb_hid_attribute_t *attr);
+
 /*** excitation "micro-plugins" ***/
 
 #define I_FC 0
@@ -121,6 +123,7 @@
 		PCB_DAD_INTEGER(exc_ctx.dlg, "");
 			PCB_DAD_MINMAX(exc_ctx.dlg, 0, FREQ_MAX);
 			PCB_DAD_HELP(exc_ctx.dlg, "20db Cutoff Frequency [Hz]\nbandwidth is 2*fc");
+			PCB_DAD_CHANGE_CB(exc_ctx.dlg, exc_val_chg_cb);
 			exc_ctx.exc_data[idx].w[I_FC] = PCB_DAD_CURRENT(exc_ctx.dlg);
 
 		PCB_DAD_LABEL(exc_ctx.dlg, "f0");
@@ -127,6 +130,7 @@
 		PCB_DAD_INTEGER(exc_ctx.dlg, "");
 			PCB_DAD_MINMAX(exc_ctx.dlg, 0, FREQ_MAX);
 			PCB_DAD_HELP(exc_ctx.dlg, "Center Frequency [Hz]");
+			PCB_DAD_CHANGE_CB(exc_ctx.dlg, exc_val_chg_cb);
 			exc_ctx.exc_data[idx].w[I_F0] = PCB_DAD_CURRENT(exc_ctx.dlg);
 
 	PCB_DAD_END(exc_ctx.dlg);
@@ -166,6 +170,7 @@
 		PCB_DAD_INTEGER(exc_ctx.dlg, "");
 			PCB_DAD_MINMAX(exc_ctx.dlg, 0, FREQ_MAX);
 			PCB_DAD_HELP(exc_ctx.dlg, "Center Frequency [Hz]");
+			PCB_DAD_CHANGE_CB(exc_ctx.dlg, exc_val_chg_cb);
 			exc_ctx.exc_data[idx].w[I_F0] = PCB_DAD_CURRENT(exc_ctx.dlg);
 	PCB_DAD_END(exc_ctx.dlg);
 }
@@ -201,11 +206,13 @@
 		PCB_DAD_INTEGER(exc_ctx.dlg, "");
 			PCB_DAD_MINMAX(exc_ctx.dlg, 0, FREQ_MAX);
 			PCB_DAD_HELP(exc_ctx.dlg, "Nyquest Rate [Hz]");
+			PCB_DAD_CHANGE_CB(exc_ctx.dlg, exc_val_chg_cb);
 			exc_ctx.exc_data[idx].w[I_F0] = PCB_DAD_CURRENT(exc_ctx.dlg);
 
 		PCB_DAD_LABEL(exc_ctx.dlg, "function");
 		PCB_DAD_STRING(exc_ctx.dlg);
 			PCB_DAD_HELP(exc_ctx.dlg, "Custom function");
+			PCB_DAD_CHANGE_CB(exc_ctx.dlg, exc_val_chg_cb);
 			exc_ctx.exc_data[idx].w[I_FUNC] = PCB_DAD_CURRENT(exc_ctx.dlg);
 	PCB_DAD_END(exc_ctx.dlg);
 }
@@ -245,6 +252,7 @@
 		PCB_DAD_LABEL(exc_ctx.dlg, "Specify the excitation setup script:");
 		PCB_DAD_TEXT(exc_ctx.dlg, NULL);
 			PCB_DAD_COMPFLAG(exc_ctx.dlg, PCB_HATF_EXPFILL | PCB_HATF_SCROLL);
+			PCB_DAD_CHANGE_CB(exc_ctx.dlg, exc_val_chg_cb);
 			exc_ctx.exc_data[idx].w[I_SCRIPT] = PCB_DAD_CURRENT(exc_ctx.dlg);
 	PCB_DAD_END(exc_ctx.dlg);
 }
@@ -333,6 +341,11 @@
 	select_update(1);
 }
 
+static void exc_val_chg_cb(void *hid_ctx, void *caller_data, pcb_hid_attribute_t *attr)
+{
+	excitations[exc_ctx.selected].ser(exc_ctx.selected, 1);
+}
+
 static void pcb_dlg_exc(void)
 {
 	static const char *excnames[MAX_EXC+1];