I can't scrape size variations

Hello guys, I'm new with the web scraper and I can´t scrape the size variations. Can you help me? Thank´s

Url:

Sitemap:
{"_id":"dportenis-basquetbol-nike","startUrl":["https://www.dportenis.mx/deportes-dportenis/deportes-basquetbol-dportenis#facet:-100278105107101&productBeginIndex:0&orderBy:1&pageView:grid&minPrice:&maxPrice:&pageSize:250&"],"selectors":[{"id":"producto-link","type":"SelectorLink","parentSelectors":["_root"],"selector":"h4 a","multiple":true,"delay":0},{"id":"nombre","type":"SelectorText","parentSelectors":["producto-link"],"selector":"h1.main_header","multiple":false,"regex":"","delay":0},{"id":"precio","type":"SelectorText","parentSelectors":["producto-link"],"selector":"dd.price-label","multiple":false,"regex":"","delay":0},{"id":"precio-oferta","type":"SelectorText","parentSelectors":["producto-link"],"selector":"dd.special_offer","multiple":false,"regex":"","delay":0},{"id":"modelo","type":"SelectorText","parentSelectors":["producto-link"],"selector":"dd.sku","multiple":false,"regex":"","delay":0},{"id":"codigo","type":"SelectorText","parentSelectors":["producto-link"],"selector":"dd.code","multiple":false,"regex":"","delay":0},{"id":"Talla","type":"SelectorHTML","parentSelectors":["producto-link"],"selector":"td.dijitMenuItemLabel","multiple":false,"regex":"","delay":0},{"id":"imagen","type":"SelectorImage","parentSelectors":["producto-link"],"selector":"img#productMainImage","multiple":false,"delay":0}]}

Far from perfect but if you can remove nulls:

.dijitPopup.dijitMenuPopup>.dijitSelectMenu>table tr td
regex :([0-9])