[chaley]

Originally Posted by Tanjamuse

That's okay I thank you for your help, I may return with other questions later

(for BR too ...)

Just for completeness and ignoring that this technique is quite technical, note that you can choose arbitrary combinations by using a custom rule.

In this example I used one tags-like custom column to hold the reading lists. In my debugging environment that column is named #mytextmult. I set up reading list to put "List1" into #mytextmult if the book is on List1 and "List2" into #mytextmult if the book is on List2.

The template for the custom rule checks the four combinations of interest:

• A book is on both lists. Returns the color "green".
• A book is on List1 only. Returns the color "red".
• A book is on List2 only. Returns the color "blue".
• A book is on neither list. Returns the color "yellow".

In all the cases the rule checks that the book is not on the device.

The sample template is:

program:
	l = field('#mytextmult');
	list1 = 'List1';
	list2 = 'List2';
	first_non_empty(
		test(	and(	not(ondevice()),
				str_in_list(l, ',', list1, '1', ''),
				str_in_list(l, ',', list2, '1', '')),
			'green',
			''),
		test(	and(	not(ondevice()),
				str_in_list(l, ',', list1, '1', ''),
				str_in_list(l, ',', list2, '', '1')),
			'red',
			''),
		test(	and(	not(ondevice()),
				str_in_list(l, ',', list1, '', '1'),
				str_in_list(l, ',', list2, '1', '')),
			'blue',
			''),
		test(	and(	not(ondevice()),
				str_in_list(l, ',', list1, '', '1'),
				str_in_list(l, ',', list2, '', '1')),
			'yellow',
			''),
	)

EDIT: changed the template to use variables for the values to look for in the list.

The attachment shows the results. In addition to putting the template into a coloring rule, I put the template into a custom composite column to make it easier to see the results.