How do I updatefrom an excel spreadsheet

Hi Fred,
Welcome to the forum, Thank you for your post, in answer to your question, if you should have created a link between the spreadsheet which holds the variable data and the Access Database by using the File>Get External Data option in Access, and Using the Link Tables option, In the Link dialog box; change the Files of Type to Microsoft Excel, navigate to your chosen Workbook, select the Workseet to use and follow the options in the Link Wizard dialog boxes as required. When you click the final Finish button your worksheet will be imported into Access as a linked table. Any changes in your Excel Spreadsheet will be shown in your Access Database the next time it is opened.
Note: your worksheet should be created as a list with just field headings in row 1, and the data directly beneath, row 2, 3, 4 etc. I hope that has been of help to you, best regards Pete.