"{Item:{id:}" data testing [duplicate]

Question

How do I test for items with a data value, like gray dye or purple wool, using the {Item:id} command?

I have tried using {Item:{id:minecraft:dye:7}} and {Item:{id:351/7}}

Answer 1

You are looking for the Damage tag. It is of type short, so you also need to suffix the number with an 's':

{Item:{id:minecraft:dye,Damage:7s}}