Editing the drop down menu so the deafult is 'plase select size' rather than the size

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We use the Debut theme and I followed the instructions in changing the default in the drop down to 'Select size"'
It seems to have added it but the price is missing even when I select a variant.
When I went to the product price snippet the code for variant titles did not exist but there was one for 'variant title' see below on line 2:
I'm just wondering if this is the code I'm meant to replace as it looks similar.