Error when using TweenService:Create

When I test it comes up with:
Expected ‘}’ (to close ‘{’ at column 60), got ‘=’

I have no clue how to fix this, Help would be highly appreciated. If you need more info just ask

local tween = TweenService:Create(HPremove, NewTweenInfo, {HPbar.Size.X = UDim.new(HPbar.Size.X)})

The specified property must be a single string and not indexed by periods. Just use size. Also, I do not think your target object is the same as the onle you used in the property table.