BJP president Amit Shah here on Monday advised party workers not to let the outside world know about the party's shortcomings, saying "one should not publicise if one's child is weak".The advice was given in the light of ongoing Vyapam scam in Madhya Pradesh and the party's image getting influenced by it. Though Shah, who arrived here for the party's mass contact programme in Madhya Pradesh and Chhattisgarh, did not directly mention Vyapam, the issue was the subject of general gossip all around."If a child is weak, you don't need to publicise it. It only harms your home (the party). At times, media tries to create wrong impression, so watch out against it," he said.He said: "Party workers will visit people at their houses and brief them about BJP's policies and ideology. The party would train 15 lakh workers in three months."