Yes, you can do that.

but a Values type has been defined in the net/url library, which is actually map [string] [] string written by you. You can directly assign a [] string or you can traverse your [] string and use Values's Add method

v := make(url.Values)
values := []string{"one", "two"}

// 
v["test"] = values
// 
for _, value := range values {
    v.Add("test", value)
}
// 

  
 suggest map [string] interface {}