Updating space data blocks
You can store space data in block attributes which are placed inside the spaces in a drawing. This will also allow the users of DWG viewer to see the space data on the drawing.
Procedure
1. Go to the > menu.
2. Select Analyze drawing, to analyze the drawing structure.
3. On the > menu, select Palette.
4. On the Palette, click the Spaces tab.
5. In the Data block link section, click the Add/Edit button.
6. On the Data block details dialog box, select a Layer and a Block from the drop-down list, to define the block, layer and field relation.
7. In the Fields and attributes section, select a field name from the Available list.
8. In the Attribute tags column, select a block attribute to map it onto the selected field name.
Click the 
button to map the selected field name and the block attribute.
button to map the selected field name and the block attribute.9. You can map the relevant fields onto the available block attributes for the block you selected from the drop-down list.
10. Click Save.
11. Click the Apply button.
The space block data in the selected space layer is updated. The space block definitions are stored at the following location: C:\Documents and Settings\<User directory>\Application Data\Planon\Planon Connect for AutoCAD\BlockDefinitions