5E Cleric's Destroy Undead macro help

Hello, I'm trying to figure out a way to automate this macro line so I don't have to click the answer to a query. It spits out the CR threshold for destroy undead for a certain cleric level. "-1" is a placeholder for "you can't destroy undead yet". ?{Cleric level|1-4,-1|5-7, 1/2|8-10, 1|11-13, 2|14-16, 3|17-20, 4} Ideally it would be a series of if-then statements (If cleric level is between 5 and 7, then you can destroy CR 1/2 undead), which I'm aware can only be done with a pro account. But I'm hoping that someone out there has come up with a clever solution that doesn't require paying money. For reference, here is the whole macro right now. I have bolded the fragment I want replaced. --- &{template:traits} {{name=TURN OR DESTROY UNDEAD}} {{source=Class: Cleric}} {{description=Kolve screams "BURN IN THE RADIANCE OF ARKAN!" as he defiantly brandishes his holy symbol, which now shines with a harsh golden light.  Each undead within 30 feet of Kolve that can hear him must make a DC [[8+@{kolve|PB} [PB] +@{kolve|wisdom_mod} [WIS mod] ]] Wisdom saving throw. On a failed save, the creature is turned for 1 minute or until it takes damage. If a creature fails its saving throw and its challenge rating is less than or equal to [[ ?{Cleric level|1-4,-1|5-7, 1/2|8-10, 1|11-13, 2|14-16, 3|17-20, 4} ]], the creature is instantly destroyed.  }} --- Thanks

Yes this can be done with a free account.  [[{@{level},0}>1*(-1) +  {@{level},0}>5*(1.5) +  {@{level},0}>8*(0.5) +  {@{level},0}>11*(1) +  {@{level},0}>14*(1) +  {@{level},0}>17*(1)]] This gives you: 1-4 = -1 5-7 = -1 + 1.5 = 0.5 8-10 = -1 + 1.5 + 0.5 = 1 11-13 = -1 + 1.5 + 0.5 + 1 = 2 14-16 = -1 + 1.5 + 0.5 + 1 + 1 = 3 17+  = -1 + 1.5 + 0.5 + 1 + 1 + 1 = 4

Wow, yeah. Thank you. It seems to work but I don't understand how. The output data doesn't actually show me what's happening. I get the additive properties but I guess I don't understand the scripting logic? Specifically this part -  {@{level},0} . What is happening there? It might just be a "shh... it just works" situation but I'd like to understand each piece so that I can use it for other applications in the future. Would you mind explaining that to me?

Basically I am doing a check to see if something is equal to a criteria. That acts as a 0 or 1 switch. There are two ways to do this, the Success/Failure  method and Grouped Rolls + the Success/Failure method.  Success/failure requires a dice roll, so I opted for Grouped Rolls which doesn't (saves me 2 characters). Success/failure in this example would look like: {X+1d0}>Z Grouped Rolls look like this: {X,Y} Grouped Rolls + Success/Failure look like this: {X,Y}>Z In this example: X = the @{level} Y = some number that will never be a success. In this case, 0.  Z = the success criteria (minimum level for it to be a success) Thus we have {@{level},0}>Z Next we multiply that by whatever number we want if it is a success.