diff --git a/HMI/README.md b/HMI/README.md
index 54e23f28..dc6f283f 100644
--- a/HMI/README.md
+++ b/HMI/README.md
@@ -123,6 +123,12 @@ The following message can be used to update the content on the cardEntities Page
 
 `exitPopup`
 
+### popupInSel Page (input_select detail page)
+
+`entityUpdateDetail2~*entity_id*~~*icon_color*~*input_sel*~*state*~*options*
+
+options are ? seperated
+
 ### cardThermo Page
 
 `entityUpd~*heading*~*navigation*~*internalNameEntiy*~*currentTemp*~*destTemp*~*status*~*minTemp*~*maxTemp*~*stepTemp*[[~*iconId*~*activeColor*~*state*~*hvac_action*]]~tCurTempLbl~tStateLbl~tALbl~iconTemperature~dstTempTwoTempMode`