Hello,
I'm tring to make a summoning podium with special effects. I have tried adding fire effect when the "summoning" starts ,but insted of ground fire-my sim bursts out in flames. I have read lots and lots of articles(could be because of my poor English) but everytime i make a change, my game crashes or i loose the effect at all.
I tried this tut and when i try to add it to my podium-the fire never starts ot crashes.

Here's a link of my object(it's a clone from base game's punching bag)

Try changing your node 0x7 to [prim 0x0070] Effect Stop/Start (Soft start effect, Target: Stack Object ID 0x0000, targeting slot: 0x01, "fireLgHuge" [Effect:0x00 (Private)], icon: no icon, Priority: False, model: default).

Operands:
00 0A 00 00 00 00 01 00
00 01 00 00 00 00 00 00

Me (or My Object) is the Sim running the interaction. Stack Object is the object itself. Echo explains it better here (specifically in the "Me" and the "Stack Object" part). If I recall correctly, the numbering is the order of the slots per type as listed in the SLOT, so that is why it is Target slot 0x1 (since it is the first Target slot).

Ok i did it and it worked. But how do i stop the fire after the summoning stops? When i cancel my summoning,the animation playes until it finishes,i expected the same to happen to the fire as well. But instead it keeps burning.

You need to run a BHAV node that tells it to stop. Select node 0x7 and click on the "Add" button. This will add a new node, node 0x9, which is a duplicate of your effects BHAV node. Since it is a duplicate of that node, it will likely have its True Target pointing at node 0x8 and its False Target as "Return False". Change the True Target to "Return True". Then change the first operand to 2:
02 0A 00 00 00 00 01 00
00 01 00 00 00 00 00 00
...resulting in [prim 0x0070] Effect Stop/Start (Soft stop effect, Target: Stack Object ID 0x0000, targeting slot: 0x01, "fireLgHuge" [Effect:0x00 (Private)], icon: no icon, Priority: False, model: default).

Right now, no nodes lead to node 0x9 so it will not run. So select your node 0x8 and change its True Target to 0x9. Now when your end the interaction, "Wait For Notify" will proceed through the "True Target" to the newly added node 0x9 which turns off the effect.

Thank you ,Thank you ,Thank you !!!!! It worked perfectly