Detecting Interferences > Working with Interference Detection Results > To Set Timestamp Attributes for Interference Detection
  
To Set Timestamp Attributes for Interference Detection
The timestamp attributes are used to check if parts have been modified after the interference report was created. These are the default timestamp attributes for Windchill-based interference queries: 
epmdoc_modifyTimestamp_epoch
part_modifyTimestamp_epoch
epmdoc_dcstructure_modifyTimestamp_epoch
In the Creo View client the timestamps identify if an interference report is out of date. If your enterprise is using Creo View with another system, and not Windchill, you can use the same technique to create timestamp attributes with your own properties. 
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The out of the box timestamp attributes are specific to the use with Windchill, so if you are using Windchill, do not change anything.
For non-Windchill systems, ensure that only an administrator changes these settings.
1. Click File > Options. The Creo View Options dialog box opens.The Creo View Options dialog box opens.
2. On the left, click Interference. The Model-Interference options open.
3. To add an attribute value to in an interference detection, follow these steps:
a. Click Add. The Add Attribute dialog box opens.
b. In the Name field, type the name of the attribute.
c. In the Category field, type the name of the category.
d. Click OK to add the attribute and close the Add Attribute dialog box.
4. To edit an attribute value to an interference detection, follow these steps:
a. Select an attribute from the attribute list. The Edit button is selectable.
b. Click Edit. The Edit Attribute dialog box opens.
c. Edit the attribute value.
d. Click OK to keep the changes and close the Edit Attribute dialog box.
5. To delete an attribute value from an interference detection, follow these steps:
a. Select an attribute from the attribute list. The Delete button is selectable.
b. Click Delete. The attribute is deleted.
c. Click OK to keep the changes and close the Edit Attribute dialog box.
6. To activate the timestamp attribute option and activate synchronization of iterations of Interference reports, under Attributes, select Check Attributes for loaded Interference reports.
7. Click Apply to apply the options and keep the Creo View Options dialog box open, or click OK to apply the options and close the dialog box.