I use the INIDRECT function in Google Spreadsheet to retrieve a defined cell range via the INDEX function. The formula in german declaration looks like this:
=IF(ISTZAHL($P2955),$P2955*IFERROR(INDEX(INDIRECT(CONCATENATE("projects_",$O2955,)),$B2955),1),"")
All worked fine since a year and now it doens't work anymore. If I use the INDIRECT formula only it shows me the following error:
Parameter 1 of the function INDIRECT uses the value: "projects_GBP" This is no valid range value.
If I specify the range value "projects_GBP" without INDIRECT function it will find the value.
Was there a change in the INDIRECT formula or why does my formula no longer work?