https://communities.bentley.com/products/geotech-analysis/f/forum/202045/assiging-material-to-a-soil-volumeHello, I am using python scripting to atomize the calculation for a seepage analyses. I imported the soil volume in the structure part using the following python lines: Volume_1=g_i.import_(&quot;structurevolume&quot;, r&quot;\\Sestofs010\projekt\25465\13_BERAen-USTelligent Community 12https://communities.bentley.com/thread/607496?ContentTypeID=1Thu, 03 Sep 2020 15:11:24 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:582dd14b-766c-4c0c-afdb-ebe95a057df0Stefanos Papavasileiou<p>Dear Rey,</p> <p>When importing a single volume, the command line reports the following:<br /><em>Added Volume_1</em><br /><em>Added Soil_1</em></p> <p>This means that when importing a volume object, PLAXIS creates two objects, the volume itself and the soil that belongs to it.</p> <p>In your code, the <em>g_i.import</em> command is assigned to a single variable that will point to volume and not the soil. Therefore, assigning a material to the volume will not work as the material is a property of a soil object.</p> <p>Try the following:</p> <p>volume_1, soil_1 = g_i.import_(&quot;structurevolume&quot;, r&quot;\\Sestofs010\projekt\25465\13_BERA\PLAXIS-3D\Reyhaneh_test_standpipes\Drawing4_milimtere.dxf&quot;)<br />g_i.setmaterial(soil_1, Material3)</p><div style="clear:both;"></div>