# Dynamo Sandbox to Autocad - Change Dynamic Block Properties **URL:** \ **Category:** Civil 3D\ **Tags:** python, dynamo, dynamosandbox\ **Created:** [August 21, 2019, 1:02am UTC](https://forum.dynamobim.com/t/dynamo-sandbox-to-autocad-change-dynamic-block-properties/39694 "2019-08-21T01:02:00Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![salvatoredragotta](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/salvatoredragotta/32/10078_2.png) [@salvatoredragotta](https://forum.dynamobim.com/u/salvatoredragotta)\ **Post date:** [August 21, 2019, 1:02am UTC](https://forum.dynamobim.com/t/dynamo-sandbox-to-autocad-change-dynamic-block-properties/39694/1 "2019-08-21T01:02:00Z")
Hi All, I’m using Dynamo Sandbox to place some Dynamic Blocks in Autocad converting the code below to Python ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/5/a/5a9bff623f01f12a43fd8cf7758ef7077d7b088d.png) Then I want to set the properties/atttributes using GetDynamicBlockProperties which returns an array of DynamicBlockReferenceProperty objects ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/4/8/48c853dc229387908acb50bb013e96860a0fb93f.png) ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/a/6/a6e2faa823fbfec022507320ec2f17cbe6202e59.png) But if I loop I get an error ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/4/b/4b66341c7e4ae27184f0ffc3ddc0f4313ba81797.png) Any Ideas how to access and set the properties/atttributes? Also any information on how to deal with \_\_ComObject with ironPython? ---
**Author:** ![Koz\_Jono\_Yeoh](https://avatars.discourse-cdn.com/v4/letter/k/7ea924/32.png) [@Koz\_Jono\_Yeoh](https://forum.dynamobim.com/u/Koz_Jono_Yeoh)\ **Post date:** [September 9, 2019, 3:26pm UTC](https://forum.dynamobim.com/t/dynamo-sandbox-to-autocad-change-dynamic-block-properties/39694/2 "2019-09-09T15:26:34Z")
You can directly use LinkDWG package to do that.