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https://pubads.g.doubleclick.net/gampad/ads?iu=231779945/Ad_Unit_2&env=vp&gdfp_req=1&output=xml_vast4&sz=640x480&vid=6026440620001&cust_params=iris_context%3Dsport_basketball&sdkv=h.3.384.1&osd=2…
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In your ad server create a new custom macro called “iris_id”
Pass the “iris_id” value from the IRIS.TV Context API into the “iris_id” macro
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