diff --git a/library/Osmocom_CTRL_Adapter.ttcn b/library/Osmocom_CTRL_Adapter.ttcn
index 93e893f..08195c8 100644
--- a/library/Osmocom_CTRL_Adapter.ttcn
+++ b/library/Osmocom_CTRL_Adapter.ttcn
@@ -61,6 +61,9 @@
 function f_ctrl_get_bts(IPA_CTRL_PT pt, integer bts_nr, charstring suffix) return CtrlValue {
 	return f_ctrl_get(pt, "bts." & int2str(bts_nr) & "." & suffix);
 }
+function f_ctrl_set_bts(IPA_CTRL_PT pt, integer bts_nr, charstring suffix, CtrlValue val) {
+	f_ctrl_set(pt, "bts." & int2str(bts_nr) & "." & suffix, val);
+}
 
 template charstring ts_bts(integer bts_nr) := "bts." & int2str(bts_nr) & ".";
 template charstring ts_bts_trx(integer bts_nr, integer trx_nr ) :=