EXTRACT-field command is not working in Splunk cloud for props.conf file

[vjsplunk]

I am trying to add an EXTRACT-field command in Splunk cloud. I added the regex, it is working in search and capturing the value. But the field is not populating when applied to the props.conf file. The value I want to extract is "Stage=number". The regex I created is: 

EXTRACT-Stage = Stage=(?<Stage>\d+)

What could be the reason?

[vjsplunk]

Sample logs looks like this:

adshdsfkdlfpofgsk message hdksodb Stage=8 gjhjyeomhf hjhdgy …
 

I deployed the configurations in the cloud instance from the settings > sourcetypes option.

[PaulPanther]

First, Key value pairs (field=value) are usually auto extracted when KV_MODE is set to auto in props.conf.

Configure automatic key-value field extraction - Splunk Documentation

If it is set to none please set your field extraction under Settings --> Fields --> Field extractions that's the right place for it.

[PaulPanther]

Please share some sample data and explain how and where you configured the props.conf.