[Feature Request] Negative iteration (CR_XY_Interpolate)

[Ratinod]

There was a need for "XY Plot" and this extension was found. However, I encountered a slight inconvenience. x_start_value and x_step (y similar) cannot be negative value. (And as I understand it, they are the ones responsible for the value in the label.) I understand that the general use of negative values is difficult to find in ComfyUI, however there are some extensions (ComfyUI_IPAdapter_plus) that have the use of negative values. Of course, to check for negative values you can use "Math Expression" (ComfyUI-Custom-Scripts). However, the value labels will not be correct. Maybe there is some undocumented way to make the correct (negative) label values?