If you want to filter for an alias you have to define a DPE filter using "@" as leading character for the alias names.
Example 1 - filter for a DP element with the alias "Exa_Bit1":
@Exa_Bit1
Example 2 - filter for DP elements with an alias starting with "Exa":
@Exa**
Example 3 - combining an alias filter and a DPE filter (two lines in the filter list):
@Exa_Bit1
ANALOG1_DP1.value
Best Regards
Leopold Knipp
Senior Support Specialist