Hi, I'm using Filemaker Pro 17 to try to calculate biomass. I have all of my field measurements stored in one table and I'm trying to lookup the biomass calculation from another table since I have several occurrences of the same species. I have a different equation for each species type--they use the same variables but have different structures. I want to be able to store the equation in one field and call it and calculate biomass in a separate table using an entry's values in the equation for each individual tree of that species. Any help would be much appreciated! Thanks in advance.