Any way to change Fullwidth Easy Slider Caption Title to H1 from inside WP?

on Fullwidth-Easyslider : Content-Tab (first tab) – click on one image to go to the slide option window.
Go to “Advanced Tab” ( Third tab ) – there you have the option to switch for each slide to a heading tag you want.

or does he like to : A way to change any Fullwidth Easy Slider Caption Title to H1 from inside WP?

the filter : avf_customize_heading_settings is now in newest enfold only in the av-helper-slideshow.php
I thought it was on former versions in each slider type.
So i only found a way to influence the whole default_heading tag by this in your child-theme functions.php:
It only changes the default_heading – if you have set a custom heading tag ( see posting of mine before with the image) it will not overwrite that.

function my_avf_customize_heading_settings( array $args, $context, array $extra_args = array() ){
	if( $context == 'avia_slideshow' ){
		$default_heading = ! empty( $dev_tags['heading_tag'] ) ? $dev_tags['heading_tag'] : 'h1';
		$args['heading'] = $default_heading;					
		$args['extra_class'] = $dev_tags['heading_class'];	
	}
  return $args;
}
add_filter( 'avf_customize_heading_settings', 'my_avf_customize_heading_settings', 10, 3 );

i did not see a way to use this filter only for the full-width slider
if you only like to influence the default_heading on fullwidth easy slider you can have your own
child-theme slideshow_fullsize.php
and change on line 810 to:
'theme_default' => 'h1',