Overview
When a File Exporter Type is set to Excel Spreadsheet (Multi Input), it uses a template file to guide which values from which input Pipes are written to which cells of cell ranges in the template file.
The Excel Template (Expr) is an expression, and is re-evaluated inside the Input Multiplier loop - it is possible for successive evaluations of the Template Expression to give different results. This is ok provided each result is a valid Template file.
Each pass of the input multiplier loop generates a new output file.