Set Custom Properties (Pixel)

With this you can tie Custom Properties to a specific UserKey using key/value pairs. For instance, {"Key":"Value"} could be {"favoriteColor": "blue"}. Note that each call to set custom properties will replace any existing custom properties.

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The max size of a custom data object in a UserDB record is 8 KB.

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We recommend using either camelCase or snake_case custom property keys as these work well with Zerkel. However kebab-case should be avoided. Also, symbol prefixes (like $, %, :, etc.) should not be used.

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Note that the user key supplied in the user object will override a user key set via the azk cookie.

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