# Zone import command FLAC3D v9 (Gridpoints and zones)

**URL:** <https://forum.itascainternational.com/t/zone-import-command-flac3d-v9-gridpoints-and-zones/1166>\
**Category:** FLAC3D\
**Created:** [September 11, 2023, 8:52am UTC](https://forum.itascainternational.com/t/zone-import-command-flac3d-v9-gridpoints-and-zones/1166 "2023-09-11T08:52:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Umer99](https://avatars.discourse-cdn.com/v4/letter/u/b77776/32.png) [@Umer99](https://forum.itascainternational.com/u/Umer99)\
**Post date:** [September 11, 2023, 8:52am UTC](https://forum.itascainternational.com/t/zone-import-command-flac3d-v9-gridpoints-and-zones/1166/1 "2023-09-11T08:52:12Z")

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Hello everyone,

I have generated the grid points and zones using Griddle. However, when I try to read the values of grids and zones in FLAC 3D using the following command, it doesn’t seem to work. I’d appreciate any assistance. Here are the commands I have implemented:  
Gridpoints  
G 1, 4.00000000000000e+01, 2.00000000000000e+01, 0.00000000000000e+00  
G 2 ,4.00000000000000e+01, 2.00000000000000e+01, -7.00000000000000e+01  
zones  
Z B8 1304, 3597, 3477, 522, 3710, 521, 513, 3598, 512

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**Author:** ![cheng](https://avatars.discourse-cdn.com/v4/letter/c/ecccb3/32.png) [@cheng](https://forum.itascainternational.com/u/cheng)\
**Post date:** [September 12, 2023, 2:33pm UTC](https://forum.itascainternational.com/t/zone-import-command-flac3d-v9-gridpoints-and-zones/1166/2 "2023-09-12T14:33:50Z")

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You should use the command “[zone import](https://docs.itascacg.com/itasca900/flac3d/zone/doc/manual/zone_manual/zone_commands/cmd_zone.import.html?node3170)", rather than to call the grid file.