Hi Octavio, The syntax of the file would give you a file named TimeValues.his. The OutputFile parameter is what controls the filename. You need to make sure your filters are also within the <FILTERS> tag outside of the <CONDITIONS> tag as well in the session file. See attached file for an example with syntax. Hope this helps! Kind Regards, James. ________________________________ From: nektar-users-bounces@imperial.ac.uk <nektar-users-bounces@imperial.ac.uk> on behalf of Octavio Morales <oct_amg1289@hotmail.com> Sent: 12 September 2022 22:39 To: nektar-users <nektar-users@imperial.ac.uk> Subject: [Nektar-users] Issue with History points This email from oct_amg1289@hotmail.com originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list<https://spam.ic.ac.uk/SpamConsole/Senders.aspx> to disable email stamping for this address. Hi dear Nektar++ community, I've been trying to execute the HistoryPoints filter but I'm still not getting the so called session.his file. This is the syntax I'm using: ***************************************************************************************************************** <NEKTAR> <FILTER TYPE="HistoryPoints"> <PARAM NAME="OutputFile">TimeValues</PARAM> <PARAM NAME="OutputFrequency">1000</PARAM> <PARAM NAME="Points"> 1.3 0 0 1.5 0 0 0 0.5 0 0 -0.5 0 0.5 0.5 0 0.5 -0.5 0 </PARAM> </FILTER> </NEKTAR> ***************************************************************************************************************** Thanks for your attention, any help is highly appreciated. Kind regards, Octavio.