Unable to add more than one single text value to product metafield in Flow

Hi,

Wondering if someone can help. I’m testing a flow to add a product metafield for filtering purposes. The metafield definition is set up as a list of single text values, with 2 preset choices, “In stock at Location A” and “In stock at Location B”. When I test the flow, for example, updating the inventory at both locations to be greater than 1, it only adds one of the metafield values, “In stock at Location B”, not both of them. What am I missing?