Thank you, template program works.
I did change the templates so it will show the previous month.
Month.
Code:
{:'contains(format_date(today(), 'MM'), 01, 12, finish_formatting(subtract(format_date(today(), 'MM'), 1), '.0f','',''))'}
Year.
Code:
{:'contains(format_date(today(), 'MM'), 01, finish_formatting(subtract(format_date(today(), 'yyyy'), 1), '.0f', '',''), format_date(today(), 'yyyy'))'}
The URL will show the future book releases by author, amazon.com, kindle edition, English language.
Code:
https://www.amazon.com/gp/search/ref=sr_adv_b/?search-alias=stripbooks&unfiltered=1&field-keywords=&field-author={author}&field-title=&field-isbn=&field-publisher=&node=&field-p_n_condition-type=&p_n_feature_browse-bin=618073011&field-age_range=&field-language=English&field-dateop=After&field-datemod={:'contains(format_date(today(), 'MM'), 01, 12, finish_formatting(subtract(format_date(today(), 'MM'), 1), '.0f','',''))'}&field-dateyear={:'contains(format_date(today(), 'MM'), 01, finish_formatting(subtract(format_date(today(), 'yyyy'), 1), '.0f', '',''), format_date(today(), 'yyyy'))'}&sort=relevanceexprank&Adv-Srch-Books-Submit.x=50&Adv-Srch-Books-Submit.y=