How-to change alt-attribute in ANIga thumb page

Hello,

I am using the WP-plugin ANIga gallery v0.30 to show photos on my website.

Default this plugin shows the filename as alt for the pictures. I want to use the caption instead, and add a title attribute to it. I managed to do this for the photo page. But I cannot get the thumbs page to work, because the code is a bit different.

Here is a link to the functions.php. I guess I need to change this part of the code:

function thumbpics() {

		global $aniga, $aniga_lang;
		$album = $this->album;
		$col = 1;
		$col_count = get_option('anigal_colums');
		$thumbs = $aniga->getthumbs($album->alb_id, $this->page['page_start'], $this->page['page_end']);
		foreach ($thumbs as $pic) { 

			if ($col == 1) : ?>

			<tr>

			<?php endif; ?>

			<td align="center" valign="middle" class="gallery_thumb_td"><a href="<?php echo anigal_get_permalink($this->id, $pic->pid, 'pid'); ?>"><img src="<?php echo $pic->path . 'thumb_' . $pic->filename; ?>" class="gallery_pic_border" alt ="<?php echo $pic->filename; ?>" /></a>

I tried replacing the $pic->filename with $pic->caption or title, (you can find that in the last line of the above code) but that doesn’t work.

Here is a link to a thumb page, so you can see the code of that also: https://www.akershoek.com/wp/recent-photos/

Can someone help me solve this?

Best regards,
Jeroen Akershoek