custom metric is undefined

[koen_de_keersma]

Hello

I've added a custom metric to my Google Universal tag. 

It should be send when there is a new transaction. Therefore, I've mapped it like this in the GA tag under the metrics category:

- Event type: transaction

- Metric: metric1

When I debug it, the google debug info tells me the metric is undefined: 

Running command: ga("gaMain.ecommerce:addTransaction", {metric1: undefined, id: "1511265721905", affiliation: "", revenue: "337.50", shipping: "", tax: "", currency: ""})

When I take a look in the utag_data object, the commerce_product_fraction is properly defined and filled in with an array:

Does anyone know what I've did wrong? 

Thanks for the help! 

[AndreScholten · Accepted solution]

What if you create a new Data Layer variable (type: javascript variable) and call it "commerce_product_fraction[0]". Than it should get the first string within the array, @koen_de_keersma. Now you're trying to put an array into the custom metric.

[adrian_browning]

HI @koen_de_keersma

What @AndreScholten suggests is correct, you are trying to assign an array to the mapping, which will not work.

Using a Set Data Values Extension as suggested is the best option.

Adrian

[koen_de_keersma]

Thanks guys! Did the job indeed.