Dynamic model assignment from Struct in Go

Sample.go

type Check struct {
        StyleId                 string      `json:"styleId"                 binding:"required"`
        ProductCode             string      `json:"productCode"             binding:"required"`
        Overlay                 bool        `json:"overlay"`
        Font                    string      `json:"font"`
        OwnerText               []string    `json:"ownerText"               binding:"required"`
        BankText                []string    `json:"bankText"                binding:"required"`
        NumberingRouting        string      `json:"numberingRouting"        binding:"required"`
        NumberingAccount        string      `json:"numberingAccount"        binding:"required"`
        NumberingStart          string      `json:"numberingStart"          binding:"required"`
        GraphicsBackground      string      `json:"graphicsBackground"`
        GraphicsExpression      string      `json:"graphicsExpression"`
        GraphicsPridemark       string      `json:"graphicsPridemark"`
        GraphicsLogo            string      `json:"graphicsLogo"`
        SignatureExtraLines     int         `json:"signatureExtraLines"`
        SignatureOverText       []string    `json:"signatureOverText"`
    }


var model []string 
if product.LayoutItems[v].Model == "ownerText" {
    model = check.OwnerText
}else if product.LayoutItems[v].Model == "bankText" {
    model = check.BankText
}else if product.LayoutItems[v].Model == "signatureOverText" {
    model = check.SignatureOverText
}
for id , element := range model {
    ft.DrawString( element , freetype.Pt( product.LayoutItems[v].X , product.LayoutItems[v].Y + id * product.Global.LineHeight ) )
}