Quest source problem

[Draveniou1 853]

source:

DWORD level = m_pkOwner->GetQuestFlag("mobquest.("mob_"..mobVnum"));

questside:

pc.setqf("mob_"..mobVnum,pc.getqf("mob_"..mobVnum),1)

 

working only this:

DWORD level = m_pkOwner->GetQuestFlag("mobquest.("mob_"));

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and not work this

 DWORD level = m_pkOwner->GetQuestFlag("mobquest.("mob_"..mobVnum"));

 

how to solve it ?    I need this at the source  GetQuestFlag("mobquest.("mob_"..mobVnum"));    and not   GetQuestFlag("mobquest.("mob_"));

Is there any idea?