Android Question Dbutils var sql warning (solved)

Public Sub CreateTable(sql As SQL, TableName As String, FieldsAndTypes As Map, PrimaryKey As String)
    Dim sb As StringBuilder
    sb.Initialize
    sb.Append("(")
    For i = 0 To FieldsAndTypes.Size - 1
        Dim field, ftype As String
        field = FieldsAndTypes.GetKeyAt(i)
        ftype = FieldsAndTypes.GetValueAt(i)
        If i > 0 Then sb.Append(", ")
        sb.Append("[").Append(field).Append("] ").Append(ftype)
        If field = PrimaryKey Then sb.Append(" PRIMARY KEY")
    Next
    sb.Append(")")
    Dim query As String
    query = "CREATE TABLE IF NOT EXISTS [" & TableName & "] " & sb.ToString
    Log("CreateTable: " & query)
    sql.ExecNonQuery(query)
End Sub

'Deletes the given table.
Public Sub DropTable(sql As SQL, TableName As String)
    Dim query As String
    query = "DROP TABLE IF EXISTS [" & TableName & "]"
    Log("DropTable: " & query)
    sql.ExecNonQuery(query)
End Sub