I'm making a customization for adding export and import features to a page.I used EPPlus packages to do that.
![](https://uploads-us-west-2.insided.com/acumatica-en/attachment/51966262-4d98-4dec-93a8-0a271de7f42e.png)
However, when I transfer my customization project file to another Acumatica website. and when I Publish, it shows the error that the project does not have EPPlus packages. So I used the custom file feature to add EPPlus packages so it can be published on any website.
However I got an error
![](https://uploads-us-west-2.insided.com/acumatica-en/attachment/523c360f-b412-418e-b951-1eae172e7f7a.png)
Failed to resolve method reference: System.Void OfficeOpenXml.FormulaParsing.ICellInfof0...,0...]::Set(System.Int32,System.Int32,OfficeOpenXml.FormulaParsing.ICellInfo) declared in EPPlus.dllEPPlus.dll Failed to resolve method reference: OfficeOpenXml.FormulaParsing.ICellInfo OfficeOpenXml.FormulaParsing.ICellInfof0...,0...]::Get(System.Int32,System.Int32) declared in EPPlus.dll
When I add Bin/EPPlus.dll to custom Files, I get the above error when publishing customization project.
The problem I am facing is is there any way I can add the EPPlus package to my customization project?