Show Caption not work

Good Morning,
After uploading the slides to the module, I put displayed titles and texts as well as link to a page, and it does not work.
Give me as an answer (undefined)
I need some help to put the texts on the slides.
Thank you very much in advance.
Greetings. Elviro

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Buenos días,
Después de subir las diapositivas al módulo, pongo los títulos y textos para mostrar, así como un enlace a una página, y no funciona.
Me da como respuesta (indefinido)
Necesito ayuda para poner los textos en las diapositivas.
Muchas gracias por adelantado.
Saludos. Elviro

Hi Elviro.
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Thank you so much for empathy