how to do personalization with external segments in Target

[asn_india]

I have a usecase where audience/segment is getting created in Target from an external system(eg salesforce).

Now lets say segments is created in traget using target APIs.

Next step would be to use this audience and create activity to assign some experience for these.

What I am unable to get is how on Page would Target decide that user qualifies for this imported segment ?

for example let Audience definition be like (all visitors who have a flag set to "high value customers" in salesforce. We inject this audience in Target via APIs and create activity and create experience for this.

How on page would target know that this visitor has the flag set as high value customer?

Thanks for replies in advance!

[zach_shearer · Accepted solution]

Have you had a chance to review the documentation below? 

https://marketing.adobe.com/resources/help/en_US/xref/2015_EMEA_TL16_Manual.pdf

@Amelia_Waliany links to it in another similar thread. 

https://experienceleaguecommunities.adobe.com/t5/adobe-target-questions/how-to-batch-upload-audience...

I'm subscribing to see the answer for if you've created this audience with Audience Manager. If you are using the API to set profile parameters, to create an audience that targets those, you'd select a "Custom" rule in the audience builder and then select search for parameter by Mbox and then select the parameter that you set and the corresponding value.