Suspicious function found

Hi Tobias. Thank you for a good plugin. My security plugin found a suspicious function in the file evalmath.class.php.

“The function eval called at line 502 column 6, which should be avoided whenever possible.”

Screenshot: https://drive.google.com/open?id=14J3ldvXXFaA54FiuwNYApAG_RGFozrOI

I’m thinking it’s OK. Can you confirm the function is not harmful?

Best Regards ??