Possible to add more than one compound for an HplcInput() object.

[ddalland]

I am hoping to use Mocca in my current research project. I was wondering if would be possible to enable the selection of more than one compound with known concentration and retention time in a HplcInput() object? This would allow me to use calibration samples with more than one analyte at the time, which is often how I prepare them. Currently, it appears to me that HplcInput() objects are limited to one compound object input.
Please let me know if I have misunderstood anything and no worries if the proposed change is unfeasible. Thanks!