ContributionsMost RecentMost LikesSolutionsHow to check the parameter is defined in expression library file ? I have expression.expr file. And I want to check if parameter is defined in snaplogic pipeline used { getS3EnvRoot: () => _has_restricted_access == 1 ? '/abc/' : '/xyz/', } Re: How to check if the file not found but the Directory Browser returns nothing Many thanks, I can do that. How to check if the file not found but the Directory Browser returns nothing The Directory Browser returns nothing when the specific file name cannot be found. So, how can I check if the file is found in the next snap like Router. I tried some ways like: $ == null or .get but it doesn't work. Please help me overcome this. Many thanks Solved[Pipeline] How can I get expr file from parameter? As long as before, when I add expression library, it appears the "=" button as below. But now, the "=" button doesn't appear like the picture. How can I get expr file from parameter? Re: How I can build file name of "S3 File Writer" consumed from data stream? That's very helpful for me. Thank you so much <3<3 Re: How I can build file name of "S3 File Writer" consumed from data stream? That's very helpful for me. Thank you so much ❤️ How I can build file name of "S3 File Writer" consumed from data stream? From the very first, I have data stream like as below [{ "report_pipeline_id":"5fac56734418fe353b7b846d", "transaction_id":"72479d9c-85f4-4cc6-90ec-dffac6d8536a", "client_id":"e2572c18-29de-46c1-a212-fa54f61e468f" },...] later step is CSV Formatter, this step returns [{ "content-type": "text/csv; charset=utf-8" }] Last step is "S3 File Writer". How can I set File Name of "S3 File Writer" = $report_pipeline_id + $transaction_id - it's get from the first step? Thank you! SolvedHow to get the first element in doc I have output doc as the below picture How can I get the first element from the doc? SolvedRe: How to merge all objects in an array j.angelevski: {}.extend(…$group) Woah. That’s great. I didn’t know that. You’re my hero. hahaha. Here is my result. I worked. Re: How to merge all objects in an array j.angelevski: {}.extend(...$group) Thank you. But my problem here is “I don’t know how many item in $group array”. I cannot type {}.extend($group[0],$group[1],$group[n…]) (T_T)