NPrinting is unable to calculate an array of values which your formula suggests. Any formula resulting in a boolean query ( a yes/no) will not work. You must specify a specific value.
You can leverage Qlik advanced search functionality by following the tutorial below which allows the use of a special character.:
Keep in mind that any macros run on your template will be run after the NPrinting report is generated.
You must use the following formats to build an NPrinting template using a macro: xlsm, pptx.
Hope this helps.