For when you forget to add a Control group before launching your Canvas

You know that feeling when you launch a Canvas and realize you forgot to add the control group but then you can't go back and add one in without duplicating your canvas and launching a new one?

Feel free to tell me if this solution is obvious (I will be sad that I hadn't thought of it before), or if there is a gotcha I'm missing. But today I realized I could just add a second variant that just has a delay step and treat that as a control group. Another bonus, you can increase the size of this variant (i.e. 10%, 5%, 20%) to be larger than when you launched the Canvas if needed!

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Comments

AllanHeoFNM

Hey Ashley! We just tested this, and we were ABLE to add a control group to a previously launched Canvas. Can you confirm?

But regardless, your solution is definitely a possible workaround! The only thing to consider is how the data shows up on the reporting side. We believe there should be a separate object/bucket for Controls vs one for Variants.

If a team is using a Variant to act as a Control, they most likely will have to specify in the Variant name that it's a "control" to be able to distinguish from the other Variants that are actually Variants.

ashleyatbraze

That's what I did, named it "Control"! But yes, I was not able to add an official control group to an already active canvas. I get a message that says "You may not increase your control percentage after launch."

AllanHeoFNM

Ahh thank you for clarifying! Yes, we are also seeing the same issue. Good to know! Thank you for sharing!