Survivor Abilities have the following parameters:

• Cooldown time (cooldown time in seconds)
  
• Max Usage (some abilities have certain amount of power that can be used before the ability stops automatically)
  
• Duration (Max Usage reached or not, the ability will last max this time in seconds)
  
• Range (some abilities work within a certain range but other abilities may use this differently)
  
• Damage (some abilities use this as the damage to inflict to the infected but some can use this parameter differently)

The default value of these parameters are defined in the vscript code but you can change them from the 'types.txt' file.
In this file each line is in this format:
You can use the vscript default by omitting the values in this file.
For example you can do this:
You can do this:
But you cannot do this:

This is the 'types.txt' file with all the vscript default values of each ability:
Please note that some abilities use the Range and Damage parameters to set different things.
For example:

• Gravity uses the 'Range' parameter to define the gravity amount
  
• Medic uses 'Damage' for the HP amount to regen each time
  
• Push uses 'Damage' for the push force to apply
  
• Radar uses 'Damage' as the glow duration

You can set the 'Duration' to '0' to make it infinite.