How to add a card-tool function to a Custom Card

[pesor]

I have created a custom card, that works, but I cannot figure out how to add the

card lovelace-secondaryinfo-entity-row to it.

I am using VS-Code, and have added the card-tools to the node_modules via the npm statement in the read file.

I have also found out that the secondaryinfo-entity-row card works on the standard entity card, but I want it to work on my card.

I can not figure out how to include the secondaryinfo-entity-row card into my code so that it will use the info.

My card is a altered version of the battery-state-card, and apart from the fact that I cannot add the second card, my card works with my alterations, especial to the second row info.

This is a print of a working card, with other info than Battery, but it is basically the same card, except for my additions to the secondary info. so the card is basically a copy of the original battery-state-card, but with modifications for usage.

The reason for the wish for the sencondary-entity-row card, is the HTML formatting, which is awsome.

Any help will be appriciated, and I can mention that my cards, is thought as an enhancement to my LILYGO TTGG-HIGrow card, which is a terricfic plant sensor card, and all code for this is available on my github.

//Per