setting spell ability different from default class spell ability

Hello. I try to set spell ability for a specific spell but it continues to use default SPELL ability. Example for drow wizard characters who cast Faerie Fire with CHARISM and not default SPELL (INT) ability. 

Is someone could help ?

Hi The Darkmaster, 

Please supply a screenshot of the entire spell when editing. Then please supply a screenshot of the result. (It is helpful in the future if you do not crop your image, show the entire VTT.)

Hello Gauss,

I will post a new screen

the default character spelle ability is :

As you can see the result is still calculated with INT and not CHA

The D&D 5e 2014 by Roll20 character sheet has a number of bugs. This is one of them. 

But, you are in luck, Dancing Lights does not have a saving throw, so you can safely ignore the discrepancy. 

Are there any spells that have saving throws that are incorrect? 

Hello,

Yes of course. Faere Fire for example

So for Faerie Fire I would put the DC in the description itself, then ignore the DC at the bottom. 

Here is the replacement text (I bolded the added section): 

Each object in a 20-foot cube within range is outlined in blue, green, or violet light (your choice). Any creature in the area when the spell is cast is also outlined in light if it fails a DC [[@{spell_save_dc}]] Dexterity saving throw. For the duration, objects and affected creatures shed dim light in a 10-foot radius. Any attack roll against an affected creature or object has advantage if the attacker can see it, and the affected creature or object can’t benefit from being invisible.

For any spell that uses an alternate save (such as in the case you are describing) I would change [[@{spell_save_dc}]] to the following calculation: 
[[8+@{pb}+@{attribute_mod}+@{spell_dc_mod}]]
where "attribute" in "attribute_mod" is the name of the attribute, such as Charisma.

Example: 
[[8+@{pb}+@{charisma_mod}+@{spell_dc_mod}]]

Hello

It works fine. Thank you very much.