Using +?{Modifier|0} to modify attribute in macro

I've been in a few campaigns now, mostly Warhammer 40k and I am wanting to have my macroes roll a d100 then check my characteristics (attributes). Currently I have this macro. /me swings his chainsword at the enemy [[d100<@{WS}]] the blow does [[d10+2]] damage. Which is simple enough, tests my Weapon skill and tells me if I fail/succeed with a 0 or 1. But I am wanting to use the +?{Modifier|0} thing so that if I have any buffs or debuffs it will modify my Weapon Skill. I have tried all different combinations and it doesn't seem to work correctly so I am thinking that its just not possible but I thought I would try to get help here first before I give up.

I don't think the compare operation < and > allow for the additional operation. At least I couldn't get it to work... You can do the comparison "visually" using something like; /me swings his chainsword at the enemy Roll: [[1d100]] WS: [[{WS}+?{Modifier|0}]] the blow does [[d10+2]] damage.

What happens if you try this? (I'm on laptop, laptop doesn't like the roll20 gametable or I'd test it myself) /me swings his chainsword at the enemy [[ d100 < (@{WS}+?{Modifier|0}) ]] the blow does [[d10+2]] damage.

GenKitty - it doesn't like the parens in that formula. The only way I've found to get this work is by using this: /me swings his chainsword at the enemy /r 1d100<[[@{WS}+?{modifier|0}]] the blow does [[d10+2]] damage. Because, as I understand it the, the evaluation requires a single number, so using the inline roll to add the modifier accomplishes that. Given that, I do think Vince has the better solution, because the output is a bit cleaner and easier to read. Just my opinion, though.

You could subtract the modifier from the d100 instead of adding it to your weapon/ballistic skill. You'd get the same odds.

You cannot have multiple terms after an inequality. However, as Brian stated, you can rearrange the terms of the inequality and it will work fine. Note: you need to group the first half of the inequality in braces {} and not parenthesis (). This will do what you need it to: /me swings his chainsword at the enemy [[ {1d100-?{Modifier|0}}<@{WS} ]] the blow does [[d10+2]] damage.

Awesome it works now. Thank you for the help everyone.