Using vlookup btwn worksheets when using ActiveX Excel

I am having problems using the vlookup function in Excel. It works fine if I have the lookup table on the same worksheet that's already open in LabVIEW. I first open an excel file that I use as a template. I copy the header and formula information from that file into an activeX container containing an Excel worksheet. I then allow the analyst to enter data into the ActiveX Excel spreadsheet. Meanwhile, I create a log template by creating a text file with headers. When the analyst is done entering data on the front panel, they click on the Update/Print Label button. This appends their data (a range of cells) to the text file (which is then formatted and saved using report generation tools) and it's printed to a label. The problem is on the front panel ActiveX Excel sheet. The original excel sheet used as a template has many formulas, all of which work well in Excel, as well as in the LabVIEW app, with one notable exception. One of the cells contains a formula that uses a vlookup function. The problem is when I place that lookup table on a different worksheet. It works great if I place the lookup table on the same sheet as the template, but when I try to reference a different sheet, I get an error. I'm assuming that I just need to add code to open the second Excel spreadsheet (or better yet - a separate workBOOK). I was confused at first, because the vlookup function worked fine in Excel, but not in LabVIEW. Then I realized that Excel already had all the worksheets in the workbook open, but LabVIEW does not. Am I correct? If I want to use a vlookup to look on another worksheet or another workbook, do I just have to open that second workbook/sheet in LabVIEW?

Hi Dan,
You are right. LabVIEW does not have the other worksheets open. I think that you are on the right track. I recommend opening another worksheet and testing it out. LabVIEW should stop giving you an error when you do.
Nick Keel
Applications Engineering
National Instruments
Nick Keel
Product Manager - NI VeriStand and Model Interface Toolkit
National Instruments

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