instance variable initial value question

Following the template for the tank game provided by construct 3. I am trying to set the instance value on EnemyBases or Hulls in the case of a Tank Game and the initial value being shown as the example has a minus sign not a check or empty box, how do you place that minus sign or is it just an example of the "it varies" as is shown and if it should be a value how do you place it in the box. Very confusing to me

Thanks

Thanks for answering ...

It is a boolean and for a family. The example shows a minus in the value box but I can't seem to put the - sign into the box, I only get a check mark for true or empty for false. How do you place that minus sign in the value box, I haven't had a need to do that in the past so it's new to me. Here is the original in the template and my placement which I do not have the minus sign and only get a check mark.

Thanks

i.ibb.co/92H233m/My-instance-entry.png

i.ibb.co/mbLkqLt/instance-value-varies.png

When you click a family, multiple instances of this family are selected on the layout. And if these instances have different values in the boolean variable, then it's displayed as "-".

"-" is not a value! It's just used to tell you that there is a mix of True and False values.

Okay I understand it now. I am not using the full template so this is probably why this was strange to me.

Many thanks