Merge pull request #5035 from segmentio/spencerattick-patch-2

add context about spaces in trait/property names

Author: pwseg

src/connections/destinations/destination-filters.md

@@ -218,6 +218,11 @@ You must have write access to save and edit filters. Read permission access only
 
 Use the destination filter tester during setup to verify that you're filtering out the right events. Filtered events show up on the schema page but aren't counted in event deliverability graphs.
 
+#### Can I filter on properties/traits that have spaces in the name (for example, `properties.test event field`)? 
+
+Destination Filters can't target properties or traits with spaces in the field name. As an alternative, use [Insert Functions](/docs/connections/functions/insert-functions/), which let you write code to take care of such filtering.
+
+
 #### Can I use destination filters to drop events unsupported by a destination?
 
 The check for unsupported events types happens before any destination filter checks. As a result, Destination Filters can't prevent unsupported event type errors. To filter these events, use the [Integrations Object](/docs/guides/filtering-data/#filtering-with-the-integrations-object).