Hide or auto select other option available when change variant?

[AndyHung]

Hello,

My product has different color and size options and one color has only one size. How can I setup hide or auto select other option available when change variant. Exp, variant Pine Soot doesn't have size 6kg, when choose this variant, I want option 6kg is hided or auto select size 7kg. 

Thank you so much for your help. I will appreciate this.