# Way to copy Custom Action to other components? **URL:** \ **Category:** Ask for Help\ **Created:** [February 13, 2021, 6:14am UTC](https://community.glideapps.com/t/way-to-copy-custom-action-to-other-components/22713 "2021-02-13T06:14:37Z")\ **Posts on this page:** 1\ **Showing post:** 26
**Author:** ![Jeff\_Hager](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jeff_hager/32/43_2.png) [@Jeff\_Hager](https://community.glideapps.com/u/Jeff_Hager)\ **Post date:** [March 21, 2021, 8:17pm UTC](https://community.glideapps.com/t/way-to-copy-custom-action-to-other-components/22713/26 "2021-03-21T20:17:53Z")
An arrayformula affects all rows, so you only need to type the formula once and it affects all rows in that column. If a row is empty, then you can do a length check on a column that would normally be filled, so you can have it show a blank value instead of an error or zero if the row is not populated with anything yet. I would recommend reading through this post. > [@Tutorial: Arrayformula in Google Sheets, good practices & how to overcome Arrayformula restrictions with scripts](https://community.glideapps.com/t/tutorial-arrayformula-in-google-sheets-good-practices-how-to-overcome-arrayformula-restrictions-with-scripts/9727): > > Hi, Today I will show you the script that can make copying formulas down work, when it does not work with arrayformula. But first, let’s have some introductions about arrayformula, for those who has not used this before in Google Sheets, some equivalents in Glide and some good practices while using it. I hope it can help you in building your Glide apps as well as applying it in your normal day job. > > > **1/ Definition** > > > > Arrayformula is defined as “a range, mathematical expression using one cell range … --- _[View the full topic](https://community.glideapps.com/t/way-to-copy-custom-action-to-other-components/22713)._