Nios module hierarchy in Verilog?

I can't connect to signal from module which included in SOPC system. How I should connect to hierarchical signal?

I have SOPC with Nios and my component "onchip_mem_pci". In SOPC it is "onchip_mem_pci_inst"

In SignalTab path is:

IP_TSI|NiosII:Nios|onchip_mem_pci_inst:the_onchip_mem_pci_inst|

onchip_mem_pci:the_onchip_mem_pci|PCI_ICR_IRQ

I try all combinations, and have error: compiler can't find PCI_ICR_IRQ. :cool: ???

a = IP_TSI.Nios.the_onchip_mem_pci_inst.the_onchip_mem_pci.PCI_ICR_IRQ;

a = IP_TSI.Nios.onchip_mem_pci_inst.the_onchip_mem_pci.PCI_ICR_IRQ;

a = IP_TSI.Nios.the_onchip_mem_pci_inst.onchip_mem_pci.PCI_ICR_IRQ;

a = IP_TSI.Nios.onchip_mem_pci_inst.onchip_mem_pci.PCI_ICR_IRQ;