// just insert for loop direcly to flutter widget with no ; like this for(int j = 0; j < members.length; j++) Text("${j+1}.${members[j]["m_name"]} ${members[j]["m_lname"]}"), Row( children: [ for (int i = 0; i < 4; i++) const Flexible( child: Padding( padding: EdgeInsets.all(8.0), child: CustomTextField(keyboardType: TextInputType.number), )), ], ),