topic If headers are consisent,… in Product Forum https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47786#M3453 If headers are consisent, you just reference it by header names. If you read without headers, it's Column1, Column2 etc.. Thu, 23 May 2019 16:59:00 GMT AndreyKudinov 2019-05-23T16:59:00Z Undefined Collection Reference https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47780#M3447 I have a massive excel file that I have sent to an undefined collection. With a collection that has fields that are set up in advance, you can reference the column/field by using [collection.field1] With an undefined collection, there are no predefined fields.  How can I reference a column/field when the collection is undefined   Wed, 22 May 2019 18:22:00 GMT https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47780#M3447 KenroyNembhard 2019-05-22T18:22:00Z Hi,  You can put a… https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47781#M3448 Hi,  You can put a breakpoint after reading the excel data into a collection. Open the undefined collection Data Item->Current Values. You can see the Column names in there. You could then use the same format as a defined collection to reference the fields. ( ex: [Collection dataitem.]   Thanks! Wed, 22 May 2019 19:00:00 GMT https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47781#M3448 Hemachanderrao 2019-05-22T19:00:00Z Pls check the attachment… https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47782#M3449 Pls check the attachment. Hope this is of help. Wed, 22 May 2019 19:04:00 GMT https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47782#M3449 Hemachanderrao 2019-05-22T19:04:00Z Pls check the attachment… https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47783#M3450 Pls check the attachment. Hope this is of help. Wed, 22 May 2019 19:04:00 GMT https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47783#M3450 Hemachanderrao 2019-05-22T19:04:00Z Ok, I'll give this a try.   … https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47784#M3451 Ok, I'll give this a try.    This should this work without the break, right? Wed, 22 May 2019 19:09:00 GMT https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47784#M3451 KenroyNembhard 2019-05-22T19:09:00Z Looks like it works! Thanks… https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47785#M3452 Looks like it works! Thanks a bunch! Wed, 22 May 2019 23:43:00 GMT https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47785#M3452 KenroyNembhard 2019-05-22T23:43:00Z If headers are consisent,… https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47786#M3453 If headers are consisent, you just reference it by header names. If you read without headers, it's Column1, Column2 etc.. Thu, 23 May 2019 16:59:00 GMT https://community.blueprism.com/t5/Product-Forum/Undefined-Collection-Reference/m-p/47786#M3453 AndreyKudinov 2019-05-23T16:59:00Z