Popup messages can be displayed using message command on SAP screens.
LiquidUI code:
pushbutton([TOOLBAR], "Message", {"process":displaymessage,"size":[1,2]});
Function to display message as a popup:
function displaymessage(){
message("Message displayed as a popup", {"type":0,"title":"information"}); // type "0" is for ok button
}
Please refer to below link for other pop-up types
http://www.guixt.com/knowledge_base/index.php?action=artikel&cat=103&id=957&artlang=enPlease see attachments..