Can't get hidden property starting with "_" by attribute(key:"_p1")

Shopify Functions
,
1

I’m confused that I can’t get the hidden property starting with ‘_’ (e.g. “_p1”) by using attribute(key:“_p1”), but the property starting without “_” (e.g. “p2”) works fine. I placed an order and both properties are correctly displayed in the order details, but why I can’t get the “_p1” property in ExpandItems?

here is _p1 vs p2

// property key (_p1) starting with  "_" , does not work, returns NULL

query RunInput {
  cart {
    lines {
      id
      quantity
      attribute(key: "_p1") {
        value
      }
    }
  }
}

// property key (p2) starting  without "_" , works fine

query RunInput {
  cart {
    lines {
      id
      quantity
      attribute(key: "p2") {
        value
      }
    }
  }
}
2

We also access the hidden properties in our input query.

Can you try doing this:

query RunInput {
  cart {
    lines {
      id
      quantity
      p1: attribute(key: "_p1") {
        value
      }
    }
  }
}

Assigning a variable to the hidden property has worked for us.

Let me know.