Roll macro

Is there a way for me to roll a dice and then roll a macro that takes the last dice rolled and adds the resault to a new roll combining them.  I have a warlock shooting say an eldrich blast d10 dmg and if the target is hexed i just want to press a macro for hex damage and make the macro add my last dice rolled + hex dmg so i dont have calculate the damage my self Ita not hard to do manualy but just make thibgs go quicker

How about handling hex using a Roll Query ? e.g. Damage: [[ 1d10 + ?{Is the target Hexed?|No, 0|Yes, 1d6} ]]

Excellent ide, i was thinking that, but wanted a way where i don't have to put yes or no for the hex thing,  but if it's not possible ill do it this way =) and i might post in suggestions that we should be able to call our last roll into a macro! Thank you for the help =)