Format of line above split footnote

hi, i have formatted footnotes in my document the way that footnotes start below a 0,5pt line which is of the same width as the text frame. but with long footnotes which must be split the problem is that i can't apply the same format to the line above the footnote which is split, the line is formatted automatically as a 1pt line with a length about three fifths of the the witdth of the text frame. how can i apply the same fotmat to all lines above footnotes?

thanks