Hi Guys,   How do I create a JSON with the below structure pls: {   "field 1": "123",   "field 2": "1.1.1",   "field 3": "4.428",    "Lines": [     [ 0.00523, 0.00952, 0.01626 ],     [ -0.00303, -0.00286, 0.00387 ],     [ 0.00110, 0.00814, 0.00800 ],     [ -0.00991, 0.00952, 0.00800 ]   ] } thanks