Enrique's example takes into account the syntax for a multi-value chain when assigning a 'Select In Field' match.
It has to be in the following format: (alpha|beta|gamma|delta|”ep si lon”)
(keep single quotes out of this chain, wrap spaces in double quotes)
Your default usage of GetFieldSelections() will be compatible with ‘Select in Field’ when you are selecting a single value in a field.
Once you select between 2-6 values at a time, GetFieldSelections() will return a comma-delimited chain which the ‘Select In Field’ trigger can’t parse (because of the syntax).
Switching the value_sep parameter to a ‘|’ pipe character and then wrapping each end in parenthesis will form valid multi-value chains for ‘Select In Field’
='(' & GetFieldSelections([Field A],'|') & ')'
Be cautious again, when you start selecting 6 or more values in a field. The output of GetFieldSelections() switches to literally returning ‘x of y values’, 'not x of y values, or 'All'
If you want to use GetFieldSelections() to form a selection chain that is going to cover any combination of values from a field, the max_values parameter needs to be sized to match the number of distinct values in that field.
Please find attached my application for which i have asked my question hare year and month fields are those for which i have asked question , please see triggers i have applied and here i have 4 containers which are hide and show based in tree hierarchy condition.