topic Upgrade Extension in QlikView https://community.qlik.com/t5/QlikView/Upgrade-Extension/m-p/625843#M1242306 <HTML><HEAD></HEAD><BODY><P>Hi all,</P><P></P><P>does anyone knows how to upgrade an extension which is already used in some documents in the following particular situation?:</P><P></P><OL><LI>Create a simple extension (One dimension and one Expression object, in the script alert the data.Rows.length)</LI><LI>Add the extension to a QlikView document and set the dimension value (select a field) . Save and close the document.</LI><LI>Edit the definition.xml and add a second expression </LI><LI>Reopen the QlikView document and there are no data anymore!!</LI><LI>Remove the Extension object from the document and add the extension again and it will work.</LI></OL><P></P><P>I have attached a simple expample:</P><OL><LI>install upgrade.qar</LI><LI>Open upgrade.qvw - it will show "Data rows count 10"</LI><LI>Close the document</LI><LI>There is a second definition file inside the extension folder: Definition_2.xml (which has just a second expression defined) , rename it to definition.xml</LI><LI>Reopen the upgrade.qvw - it will show: "Data rows count 0"</LI></OL><P></P><P>I hope anyone has an idea how to solve this issue, because every time my extension changes i have to recreate all the existing documents which are using my extension. Even this happens only one time, it is not feasible to any customer.</P><P></P><P>thx</P></BODY></HTML> Mon, 26 Jan 2026 16:26:21 GMT 2026-01-26T16:26:21Z Upgrade Extension https://community.qlik.com/t5/QlikView/Upgrade-Extension/m-p/625843#M1242306 <HTML><HEAD></HEAD><BODY><P>Hi all,</P><P></P><P>does anyone knows how to upgrade an extension which is already used in some documents in the following particular situation?:</P><P></P><OL><LI>Create a simple extension (One dimension and one Expression object, in the script alert the data.Rows.length)</LI><LI>Add the extension to a QlikView document and set the dimension value (select a field) . Save and close the document.</LI><LI>Edit the definition.xml and add a second expression </LI><LI>Reopen the QlikView document and there are no data anymore!!</LI><LI>Remove the Extension object from the document and add the extension again and it will work.</LI></OL><P></P><P>I have attached a simple expample:</P><OL><LI>install upgrade.qar</LI><LI>Open upgrade.qvw - it will show "Data rows count 10"</LI><LI>Close the document</LI><LI>There is a second definition file inside the extension folder: Definition_2.xml (which has just a second expression defined) , rename it to definition.xml</LI><LI>Reopen the upgrade.qvw - it will show: "Data rows count 0"</LI></OL><P></P><P>I hope anyone has an idea how to solve this issue, because every time my extension changes i have to recreate all the existing documents which are using my extension. Even this happens only one time, it is not feasible to any customer.</P><P></P><P>thx</P></BODY></HTML> Mon, 26 Jan 2026 16:26:21 GMT https://community.qlik.com/t5/QlikView/Upgrade-Extension/m-p/625843#M1242306 2026-01-26T16:26:21Z