Hi, I tried reading up on static boolean variables and tried using them with not much success. Can somebody help how I can prevent recursive triggering in the below example? Many thanks!

First Trigger updates Invoice a dollar value equal to the sum of the dollar value from Permits which have a matching Invoice number. As below:

trigger InvoiceAmountUpdate on Permit__c (after update) {

for(Permit__c obj : trigger.new)
{
    List<Permit__c> permit = [select Total1__c from Permit__c p where p.Invoice_Num__c = :obj.Invoice_Num__c];

    decimal sum = 0;
    for (Permit__c p : permit) {sum = sum + p.Total1__c;}
    List<bb_Invoice__c> invoice = [select Invoice_Amount__c from bb_Invoice__c i where i.id = :obj.Invoice_Num__c];
    
for (bb_Invoice__c i : invoice) {
        i.Invoice_Amount__c = sum;
        update i;
    }
}
}

Second Trigger updates payment amount on Permits when the full invoice value is paid. However, with each update on Permit, the first trigger is called ending in a recursive pattern

trigger PaymentStatusUpdate on bb_Invoice__c (before update) {

for(bb_Invoice__c obj : trigger.new)
{
   if (obj.Paid_Amount__c>=obj.Invoice_Amount__c) {
    obj.Payment_Status__c = 'Paid';
   
List<Permit__c> permit = [select Total1__c,Paid__c from Permit__c p where p.Invoice_Num__c = :obj.id];

    for (Permit__c p : permit) {
        p.Paid__c = p.Total1__c;
        update p;
    }
    } 

    else if (obj.Paid_Amount__c>0) {
    if (obj.Paid_Amount__c<obj.Invoice_Amount__c) {
    obj.Payment_Status__c = 'Partially Paid';
    } 
    }
}
}