How to format the data?

[mycode65678]

How to format the data?
I can't transfer an array from interface

[dobau]

I have same problem here

[mycode65678]

I have same problem here

list := data.Records.(*[]Bank)
		for k, v := range *list {
			if len(v.Card) > 4 {
				(*list)[k].Card = string([]byte(v.Card)[len(v.Card)-4:])
			}
		}
		data.Records = list