# Issues while working with BCI competition IV 2a **URL:** \ **Category:** Support & Discussions\ **Tags:** eeg\ **Created:** [June 20, 2024, 3:08pm UTC](https://mne.discourse.group/t/issues-while-working-with-bci-competition-iv-2a/8966 "2024-06-20T15:08:06Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Sara1](https://avatars.discourse-cdn.com/v4/letter/s/9de0a6/32.png) [@Sara1](https://mne.discourse.group/u/Sara1)\ **Post date:** [June 20, 2024, 3:08pm UTC](https://mne.discourse.group/t/issues-while-working-with-bci-competition-iv-2a/8966/1 "2024-06-20T15:08:06Z")
Hello everyone, I start working with BCI competition IV 2a, but I really don’t know how can I use A01E.gdf for data and A01E.mat for true labels. Is it possible to combine them into one file or something to be easier to work with ? Can someone help or make me understand how can I do ? ---
**Author:** ![sotpapad](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/sotpapad/32/2184_2.png) [@sotpapad](https://mne.discourse.group/u/sotpapad)\ **Post date:** [June 20, 2024, 4:47pm UTC](https://mne.discourse.group/t/issues-while-working-with-bci-competition-iv-2a/8966/2 "2024-06-20T16:47:39Z")
Hi, I think what you need to do is load the data in python as arrays and then concatenate them. Having said that, you can also check MOABB in order to directly load [this](https://moabb.neurotechx.com/docs/generated/moabb.datasets.BNCI2014_001.html#moabb.datasets.BNCI2014_001) (and other) BCI data, labels and metadata. I suggest you go over the [examples](https://moabb.neurotechx.com/docs/auto_tutorials/index.html) to get started on how to load the data. Cheers, ---
**Author:** ![Sara1](https://avatars.discourse-cdn.com/v4/letter/s/9de0a6/32.png) [@Sara1](https://mne.discourse.group/u/Sara1)\ **Post date:** [June 21, 2024, 9:37am UTC](https://mne.discourse.group/t/issues-while-working-with-bci-competition-iv-2a/8966/3 "2024-06-21T09:37:27Z")
I will try that. Thank you for your help 🙂